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Chapter I General ProvisionsWire distanceA 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, A valve seat 7 is arranged between the valve disc 4 and the guide sleeve 6, a packing assembly 9 is arranged between the valve stem 3 and the valve cover 2, an O-ring 10 is further arranged on the upper part 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, and the contact end of the valve disc 4 and the valve seat 7 is provided with a water grain surface 41.《青春同学会》不仅为明星班设计专属“同学村”，开启了一段四天三夜的“时光重现之旅”，还创造综艺+公演的特殊节目形式，为明星班打造独立的专属影棚与舞台，邀请影视戏剧导演亲自指导明星班级在四天内独立完成一部戏剧并进行公演。Dark brown system: longan, mango, litchi, tea, camphor tree, cinnamon, etc.被称为学校ET的千盛根其实是一名体育老师，十年如一日的教授着不被重视的冷门课程—体育课。因为所教授的课程对升学率毫无帮助，所在他在任教的这所私立学校领着微薄的工资，地位更是卑微的可怜。然而他一直坚持着对这份工作认真负责的态度，更是把提升学生的身体素质为己任。然而随着韩国升学和生源的竞争越来越激烈，为了谋求生存，学校决定通过解聘体育老师来节约资源，以完成增加英语老师数量的目标。令人吃惊的是，面临失业的千老师提出转型为英语老师，如果自己的公开课获得学生和家长的认可，学校则聘任他为英语老师。但是大家都知道，千老师虽然是个体育能手，身体素质更是好的一塌糊涂，唯独在教学方面是个白痴，英语更是从学生时代就是他的弱项。为此，千老师开始日夜苦读英语课程，为了让自己的小白式英语提升而努力奋斗故事的主人公艾莲娜公主即将从公主的身份变身成为女王，来接管Avalor帝国，当然，接管整个帝国自然会遇到各种各样的困难与挑战。但是，这位拉丁公主不畏艰难险阻，勇于挑战，并立誓要保护国家里的每一个人。与此同时，艾莲娜公主还可以耍剑比武、马车狂飙、身骑飞豹。