udp接收协议书 UDP对应的协议(四篇)

无论是身处学校还是步入社会，大家都尝试过写作吧，借助写作也可以提高我们的语言组织能力。那么我们该如何写一篇较为完美的范文呢？下面是小编帮大家整理的优质范文，仅供参考，大家一起来看看吧。

udp接收协议书(精)一

tourists, we have come to the famous badaling great wall. if you look at itfrom a distance, you can see that the great wall here is pided into south andnorth peaks, winding on the ridge. the scenery is very spectacular. lookingdown, there are two door openings and a u-shaped city wall. there were crenelson both sides of the wall to resist the enemy. if the enemy breaks through thegate and rushes into the city, he will be surrounded and annihilated by thegarrison on all sides, and the enemy will fall into the urn. wengcheng is animportant part of the great wall. it is generally built on the roads withdangerous terrain. the urn in badaling is no exception. built on the ridge,restricted by the terrain, it is low in the east and high in the west, narrow inthe east and wide in the west, only 5000 square meters. there is no well in theurn city, and there is a lack of water. usually, there are not many troopsstationed. the garrison troops are stationed in chadao city, three li is a "chayuan mansion" in the central plains of wengcheng, which is forthe emperor to stay or officials to stay. the distance between the two gates ofthe urn city is 63.9 meters. on the lintel of the west gate is inscribed "lockand key of the north gate". i have already explained its purpose.

on the gate hole, gujin is equipped with a huge double leaf wooden doorwith wooden top posts and locks. in peacetime, the gate is open for pedestriansand business travelers to enter and leave freely; in wartime, the gate is closedand firm; once the counterattack order is issued, the gate hole is the exit forthousands of troops to launch a charge. the lintel of the east gate of the urn,with the title of "juyong wai gai", was built in the 18th year of jiajing reignof the ming dynasty. on the platform of guancheng, the town of juyongwai, therewas a stone tablet carved during the wanli period of the ming dynasty. from theinscriptions, we can see the great wall, which took more than 80 years tocomplete. the stele also records the time and length of the construction of thegreat wall, the presiding officer, the foreman, the burner, the potter, thebricklayer and their names, so as to clarify their responsibilities. standing onthe city and looking down, we can see from the middle

to the constant traffic and visitors through the door. this is not only animportant military defense pass in ancient times, but also an important trafficroute. from here to changping and beijing in the south, to yanqing in the north,and to xuanhua and zhangjiakou in the northwest, "the road is pided andextends in all directions.". badaling also got its name.

looking down to the right, there is a big gun on display in the south ofdengchengkou, which is called "general weida". the gun is 2.85 meters long and105 mm in diameter. it is named after the "imperial grant of pine power to thegeneral" on the body of zhongpao. the largest range of the word is more than 500meters, which shows that the military industry at that time was relativelydeveloped.

from guancheng chengtai to the highest part of nanfeng, the south 4thfloor, the wall is 685.8 meters long and 142.4 meters high. especially betweenthe south 3rd floor and the south 4th floor, the ridge is narrow, the mountainis steep, and the great wall is more than 400 meters long. the most dangerouspart of the city top is about 70 degrees, almost straight up and down. the south1st floor and the south 2nd floor have not been restored. judging from theplinth of the south 3rd floor, there are also pavilions.

the fourth floor south of nanfeng great wall is the highest with analtitude of 803.6 meters. looking from the tower, the great wall winds fromsouthwest to northeast over the ridge, just like a dragon, magnificent. itreminds us of the poem that mr. luo zhewen, a famous expert on the great wall ofchina, chanted when he visited the badaling great wall. lock the key to thenorth gate, the sky is dangerous, and the mountain is half steep. from the south4th floor to the south 7th floor, the height decreases gradually. between thesouth 5th floor and the south 6th floor, a small white pavilion stands on theridge 30 meters away from the city wall on the inside of the great wall. this isthe "memorial pavilion for the restoration of the great wall in guizhouprovince" completed in june 1987. the south 6th floor is a shop, which is builton the top of the upper floor. it is three rooms wide, with a hard top, redpillars, gray tiles, small and exquisite. this is probably the command post ofthe "thousand generals" at that time.

today's great wall has long lost its military value. with its unique charm,it attracts the vast number of chinese and foreign tourists and has become aworld-famous tourist attraction. with the development of tourism, the greatwall, a symbol of the chinese nation and an important cultural heritage in theworld, will radiate new vitality. welcome everyone with better tourism serviceand more beautiful tourism environment!

udp接收协议书(精)二

hello everyone! welcome to badaling scenic spot for sightseeing. i'm veryglad to accompany you today. i hope you can have a good time in badaling.

the great wall is a magnificent defensive building in ancient china. itstarts from shanhaiguan in the east and ends at jiayuguan in the west, and runsacross the north of china. winding more than 12000 li, it is famous for the"great wall". it was listed in the world cultural heritage list in 1987. it iscalled "the longest defensive wall in the world" by experts and scholars.

the first time that china built the great wall was in the spring and autumnperiod in the 7th century bc, and the earliest country to build the great wallwas the state of chu. the great wall of the state of chu is called "fangcheng"in historical records, with a length of nearly a thousand li. qi was also one ofthe earliest states to build the great wall. the great wall of qi started frompingyin in shandong province in the west and entered the sea in the east. it isthe most preserved site of the great wall in the spring and autumn period.

after unifying china in 221 b.c., the first emperor of qin repaired part ofthe old great wall in the north of qin, zhao and yan. at the cost of "building acity of thousands of miles and building a people of thousands of miles", hebegan to build the great wall, which is more than 7000 kilometers long, fromlintao in the west to liaodong in the east. since then, the great wall has stoodin the east of the world, experiencing thousands of years of wind, frost, rainand snow.

in the early western han dynasty, in order to resist aggression and protectthe newly developed "silk road". it has built a great wall of more than 10000kilometers from lop nor in xinjiang in the west to liaodong in the east. this isalso the longest great wall in the history of our country.

after the establishment of ming dynasty, it faced the threat of mongoliaand jurchen. from the beginning of zhu yuanzhang, general xu da was sent northto build the great wall. until the end of ming dynasty, it was overhauled 18times, lasting more than 260 years. it was not until the 12th year of hongzhithat it was completed, starting from the yalu river in the east and reachingjiayuguan in the west. through liaoning, hebei, beijing, shanxi, shaanxi, innermongolia, ningxia, gansu and other provinces and autonomous regions. the greatwall is more than 12700 li long. and along the great wall is pided into ninedefense areas, known as "nine sides and nine towns". moreover, in many importantpass areas, especially in the north of beijing city, multiple walls were are the badaling great wall we see now.

the scale of the great wall built in the qin, han and ming dynasties is thelargest compared with other dynasties. so the three construction climaxes inhistory are the qin dynasty, the han dynasty and the ming dynasty.

now, let me introduce the badaling great wall. badaling great wall islocated in yanqing county, northwest of beijing. it is the best preservedsection of the great wall in beijing with the best engineering quality and themost rigorous structure. this section of the great wall takes the urn city asthe center, reaching the seventh floor in the south and the twelfth floor in thenorth, with a total length of 4770 meters. it is the only channel leading to theoutside of the great wall in beijing area and the front position of here, you can reach yongning and sihai in the east, xuanhua and datong inthe west, jingcheng in the south, yanqing in the north and badaling in alldirections. badaling pass city was built in 1505, with a height of 7.5 metersand a thickness of 4 meters. there is a plaque on each of the east and westgates, with "juyong wai town" in the east and "north gate lock key" in the the entrance of guancheng, there is a cannon with a length of 2.85 meters anda caliber of 10.5 cm, which is called "shenwei general". now let's look at thewall of the great wall in badaling. this section of the city wall is about 5.8meters narrow at the top and 6.5 meters wide at the bottom. it consists of fourbasic structures.

1、 city wall, two, city tower, three, pass, four, beacon tower. there is aticket door in the wall and a stone ladder in the middle. the top can hold 5horses in parallel. beacon tower is also known as beacon, beacon, wolf is independent of the city wall, almost every other mile there is a, composedof the great wall defense alarm system.

whenever enemy troops invade, the beacon towers burn beacon fires to conveymilitary information. burning smoke during the day is called beacon. at night afire is called a flint. and because wolf dung is often used as fuel, the smokeis high and hard to dissipate, so it is also called "wolf smoke". moreover, itwas stipulated in the ming dynasty. more than 100 of the invading soldiers lit acigarette and fired a gun, about 500 soldiers fired two cigarettes and two guns,more than 1000 soldiers fired three cigarettes and three guns, more than 5000soldiers fired four cigarettes and four guns, if more than 10000 soldiers wereinvolved, five cigarettes and five guns.

from badaling to the south is the famous xiongguan, juyong pass. juyongpass is one of the most famous passes of the great wall and an important barrierto the northwest of ancient beijing. it got its name from qin shihuang'sconstruction of the great wall. that is to say, the prisoners and the people whohave been punished in the palace are caught here to let them build the greatwall. and lived. juyongguan was called juyongsai in han dynasty and junduguan insui dynasty.

when it was rebuilt in the ming dynasty, it became the strongest section ofthe ming great wall. there are both military headquarters and administrativeorganizations here. juyong pass in ancient times was also lush withextraordinary scenery. juyong jucui, one of the eight famous scenic spots inyanjing, refers to this place. in addition, there are many places of interest,such as yang liulang's shuanmazhuang, mu guiying's dianjiangtai, andbaifengzhong, where dragons and phoenixes play.

not only that, but also juyong guanzhong has a white jade platform, calledyuntai, which was built in 1345. because there were three tibetan pagodas builton the stage and the coupons under the stage, it was originally called "crossingthe street pagoda". in the early ming dynasty, the pagoda was destroyed, andthen the tai'an temple was built. in the early qing dynasty, the temple wasdestroyed again, and now there are only pillar bases and watchposts. there arealso six kinds of seal cutting scriptures in sanskrit, tibetan and basiba on theinner wall, which are important objects for studying ancient chinesecharacters.

having said so much, let me tell you a story to relax. the name of thestory is called "meng jiangnu crying the great wall". it's about qin shihuangbuilding the great wall. at that time, in order to speed up the project, itbegan to draw civil servants from all over the country. meng jiangnu's husband,fan qiliang, was also transferred to build the great wall soon after herwedding.

in the twinkling of an eye, three years later, fan qiliang never heard fromhim. meng jiangnu couldn't eat well and sleep well. suddenly, one night. mengjiangnu had a dream that her husband was hungry and cold, and his clothes didn'tcover her body. she kept shouting "i'm cold, i'm hungry!" meng jiangnu woke upand decided to go to her husband, and brought him dry food and warm clothes. allthe way along the great wall in search of his husband. she went to shanhaiguanto find out that many people had died to build the great wall. her husband, fanqiliang, was also tired to death and buried under the great wall. this news islike a bolt from the blue, meng jiangnu immediately began to cry, crying earthshaking, sections of the great wall collapsed, eight hundred miles long. now theproject manager was in a hurry to report to qin shihuang who was coming here toinspect the progress of