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The default creation event is stored in the current library, and the specified library in which the event was created can also be displayed.A low temperature stop valve, Unlike Example 1, Comprises a valve body 1 and a valve cover 2, A valve stem 3 is arrange in that valve body 1, One end of the valve stem 3 is provided with a valve disc 4, The other end of the valve stem 3 is provided with an adjusting handwheel 5, A low portion of that disc 4 is provided with a guide sleeve 6, The guide sleeve 6 is fixed by means of a connecting piece and a spring pad 8, Between that disc 4 and the guide sleeve 6 is provide a valve seat 7, Between that valve stem 3 and the valve cov 2 there is provided a packing assembly 9, An O-ring 10 is further dispose at that upper portion of the packing assembly 9, An upper part of that O-ring 10 is provide with a packing gland 11, The valve body 1 is provided with an arc-shaped end face 12, the arc-shaped end face 12 forms a line seal between the valve body 1 and the valve seat 7, the contact end of the valve disc 4 and the valve seat 7 is provided with a water grain surface 41, the packing assembly 9 comprises a flexible graphite packing layer, the valve body 1 is provided with a liquid inlet cavity and a liquid outlet cavity, the two O-rings 10 are concentric arranged, and the inner diameter and outer diameter of the two O-rings are different.不过世界上的悲剧和不幸已经足够多了，陈启还是希望天下人都能遇到对的人，有情人可以走到一起。In fact, judging from my above recommendation, it is very important to lay a good foundation. In the follow-up, we will continue to read more excellent papers/frameworks, compare/practice and debug, and we will be able to make a little progress. The stage of laying the foundation must not be impetuous. If we lay a solid foundation, we will avoid many detours. Don't blindly follow the trend of worship, classics will never be out of date, reading more books/videos/excellent blogs is much better than following the trend without brains. Finally, the reason why I am so angry today is that the industry is too impetuous at present. Many people are too grandiose and misleading. Some people are scolded for telling the truth. It really pisses me off! We must keep our eyes open and work harder on our own.《你和我的警察课堂》是讲述比军队更残酷、比牢房更坚固的警察大学的年轻人们波澜壮阔的青春成长罗曼史电视剧。《栋仁的时光》是一部由TVB制作，袁伟豪、唐诗咏、黄长兴、朱晨丽等主演的香港电视剧。他不会，我会。