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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, 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.要足够尖酸刻薄。一盘棋五百年未解残局，一部武侠经典揭开其中之迷，一段情历经磨难难成姻缘，而情与义悬在爱与痛的边缘，掣一把残缺魔剑杀戮江湖，任血雨腥风、爱恨情仇、生死别离……　　至尊盟的盟主官御天欲称霸天下，决心揭开五百年前埋藏于映镜湖底的生死棋局宝藏秘密。任千行乃官御天麾下精英，他在奉命寻找棋局的钥匙凌霜剑时巧遇结义兄弟燕藏锋。千行对食神刘依依爱得疯狂，可无奈刘依依早对燕藏锋情有独钟，绝望的千行野心狂妄，意欲称霸天下……燕藏锋心仪海鲨宫宫主赫连霸的义女拜玉儿，怎奈他们之间却隔着杀母之恨的障壁。因缘巧合，女扮男装的铸剑城少主剑雄救起了因重创而失去记忆的燕藏锋，剑雄忍着刻骨的相思，迟迟未向藏锋展露她女儿的容颜……任千行失去理智。他强逼燕藏锋决战生死棋，就在藏锋使尽全身气力也无法抵抗千行的千钧一发之刻，箭神后裔箭隐惊现战场，破了凌霜剑，最终结束了这场浩劫，令江湖浩劫的宝藏也永远地沉埋在了镜映湖底。　　最终，依琳选择了十分善于甜言蜜语的浩宁，然而，婚后，浩宁轻浮的本性渐渐显露，他整日流连于欢场之中，毫不理会孤守空宅的依琳以及两人的孩子。当浩宁的情人雅丽（Panward Hammanee 饰）试图伤害依琳和她的孩子之时，依琳毅然选择了离婚。之后，依琳与家英重逢了，依琳震惊的得知，善良的家英依旧在等待着她。 ©豆瓣BIM also has the function of quantity statistics to determine the amount of building materials used for preliminary cost analysis of construction units. The traditional method is that the construction management personnel fully understand the design intention and then convey it to the construction workers. Relatively professional terms and techniques are difficult for the workers to fully understand.The agent mode pays attention to using interface and adding indirect layer to realize flexible controlWhen it is impossible for a seaplane or WIG craft to display lights and types of lights of various characteristics or positions specified in the articles of this chapter, lights and types of lights and types shall be displayed as close as possible to such characteristics and positions.