plc接线心得体会报告 plc实训心得体会(三篇)

心得体会是指一种读书、实践后所写的感受性文字。心得体会对于我们是非常有帮助的，可是应该怎么写心得体会呢？下面是小编帮大家整理的优秀心得体会范文，供大家参考借鉴，希望可以帮助到有需要的朋友。

主题plc接线心得体会报告一

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 f