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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, The upper part of the O-ring 10 is provided 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, and the two O-rings 10 are respectively arranged on the inner side and the outer side of the packing gland 11.尹旭心中暗喜：八成是了。A card, lying quietly at the bottom of the small box.工科医大理工学部的学生·掛田理（小泷望）。从年幼的时候开始就是个精力充沛的科学少年，只埋头于感兴趣的事情的怪人掛田，进入大学之后对恋爱等也不关心。为了寻求对任何事物的科学的理解，不擅长恋爱这个理论不能立的现象。这样的他爱上了学生食堂的姐姐饭岛（马场富美加）。饭岛用灭火器 扑灭食堂的豆腐，她的雄姿抓住了掛田的心。到底掛田的恋爱能成功吗？经过反复实验和验证，掛田开始了与众不同的恋爱努力！该剧讲述了从上世纪六十年代到九十年代发生在北京四合院里的故事。何雨柱是钢厂食堂的厨师，为人善良仗义却口无遮拦，人称“傻柱”。同院住着钢厂工人秦淮茹，她讲孝道，又能干，膝下有一儿两女，但丈夫因工伤去世，日子过得比较艰难。院里住着钢厂放映员许大茂，为人自私自利，跟傻柱是对头。院里还住着三位受人尊敬的老工人，人称“三位大爷”，一旦院里发生邻里纠纷，都由三位大爷协调解决。傻柱看似不着调，却心地善良，不仅对秦淮茹一家的生活资助颇多，还为孤寡老人聋奶奶养老送终。傻柱在与邻里之间的相处中逐渐成熟起来，有了男人的责任与担当。在改革开放的春风下，傻柱开办饭店，并把四合院改建成养老院，和所有的“邻里家人”幸福和睦地生活在一起。乡村振兴加速推进，全面小康建成在即，《乡村振兴面对面》畅谈“三农”发展，共话乡村振兴。