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.声bō继续散播，甚至是成为的群上都能感应到，历史注定会铭记这个震耳yù聋的声音………,检阅完军队之后，尹旭在众人的簇拥下返回越国王宫。徐海笑得更加厉害，老船主，这鸟国，这道士皇帝，你还认他？祖祖辈辈生于此，葬于此。一个人静静地死在自己的卧室里。这人是一家大公司的总经理，外环路工程主管。从现场情况看，他的死因是由于本人不慎而导致的煤气中毒。公安局刑警队长郑牧经过对现场的仔细勘察，确定常玉林是死于谋杀。重案组的调查涉及到了三位家大业大、位高权重的人物，但这三人都有案发期间不在现场、没有作案时间的证明。调查中，一个叫仇众山的引起了郑牧的注意。他发现仇众山对幕前幕后的一切都了如指掌。郑牧希望仇众山能帮助自己。而仇众山却巧妙地躲开了郑牧。紧跟着，一桩桩一件件贪污挪用公款的事实摆在郑牧面前，郑牧急切地想找到帮助自己破案的这个人，而这个人却一次次躲开了郑牧的视线。终于，郑牧了解到，那三位大人物在一起插过队，那个年月发生的事情一直延续到了今天……原来，这三个“铁哥们儿”在插队的时候，欠下了一位女知青一笑还不清的债，而这位女知青在满怀耻辱悲愤自杀未遂，被一位善良的老农救下之后，生下了一个男孩子。孩子终于长大了，他发誓为母亲报仇……After all, there was some delay on the road. After eating a little, Miss Tan went out quietly to find our accommodation at night. After dinner, we arrived at the residence. After the teacher arranged the room, we immediately set off for Zhaogang Village, Chengguan Town, the first stop of our publicity and investigation.他们夫妻不去，吴姨娘和柳姨娘当然也只能留在京城了。Some "researchers according to * * * research" always confuse their career with their amateur and make some marginal suggestions. There are also some coaches or training methods that are too professional. From the perspective of improving the national competitive level and striving for gold medals, they are determined to improve the limits of human body. For amateurs, there are also some undesirable points and they should have their own judgment. Also don't follow professional teams too much, such as the training methods of professional athletes in sports schools. The selection and training system of professional athletes are different. They begin to receive basic training of various specialties before they are 10 years old. After climbing to the provincial team, they have been trained for nearly 10 years. It is purely uncomfortable to copy and use the training plan of professional athletes. For example, Tian Tao did not practice much strength in the first three years of joining the provincial professional team, but jumped for three years. If you want to follow the current training system of others, you can jump for three years first. The same is true for other sports. The foundation and talent are different. Don't think that the advanced training method of professional teams is the unique martial arts in the world. A professional training system and the promotion and popularization of sports are basically two different things.
