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A packing assembly 9 is arranged between the valve stem 3 and the valve cover 2, the 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. The arcuate end face 12 forms a line seal between the sealing surface of the valve body 1 and the valve seat 7. The water grain 41 can ensure the sealing performance of the valve seat 7 and the valve disc 4.《甜蜜》讲述了都市女性田蜜（海清饰）由于丈夫破产去世，从一个养尊处优的富太太跌入生活谷底，在信托经理常胜（任重饰）的协助下，毅然扛起替丈夫偿还债务的重担后，一路拼搏成长赢得事业成功，并收获美满爱情的励志故事。该剧讲述一个患有自闭症谱系障碍的男孩的故事，因为这个疾病，他显得像是同学中的异类，但其实跟他们有着很多共同点，比如...一颗骚动的心。他也有喜欢的女孩，也想恋爱，尽管他完全不知道怎么做。好在，还有家人和朋友陪在他身边，让他的生活看起来搞笑之余又充满温馨...Before signing the contract, Li Qiang met with Lei Jun, head of Xiaomi. This is not the first time they have met. Shangguan News once wrote that since Li Qiang became the secretary of the Shanghai Municipal Party Committee, he has used all kinds of available time to meet with dozens of tycoons, including Lei Jun. (Frequent meetings with them, what signals do you send?)　　《黑道家族》由詹姆士·甘多费尼（James Gandolfini）、萝兰·布雷柯（Lorraine Bracco）、艾迪·法柯（Edie Falco）及麦克·英普雷欧里（Michael Imperioli）领衔主演。剧情的主线围绕在东尼·沙普蓝诺（甘多费尼饰）的家庭与自己所领导的犯罪组织的各式矛盾与冲突。背负着家族厄运的罗根兄弟（查宁·塔图姆、亚当·德赖弗）决心摆脱屌丝命运，他们招募精英搞怪团队，与爆破专家乔·邦（丹尼尔·克雷格）一起，在纳斯卡车赛现场盗窃金库，并成功逃脱FBI的追查。可是红椒和香荽却脸色发白，小手捏得死紧。