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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.　　某日，兆宇的大学死党若比找到了他，一群曾经的好友相约回到了大学时代的秘密基地“钟楼”。哪知道忽然之间钟楼里的巨大时钟发出耀眼的光芒，当兆宇再度睁开双眼之时，震惊的发现自己竟然回到了2007年，也就是他上大二的那一年。After status-obsessed teen Sara has sex for the first time, she wakes up the next day nine months pregnant-with an alien.后来项羽关中分封，彭越竟然没有得到任何的封赏，甚至是个侯爵都没有。SBS新周末剧《Style》根据在第四届世界文学奖上获奖的白英玉作家的同名小说改编，是一部讲述在时尚杂志社发生的故事与爱情的作品。虽然是周末剧，但剧中借用迷你剧中常见的时尚、料理、杂志社等素材，给人耳目一新的感觉。剧中金惠秀将饰演韩版“时尚女魔头”——追求完美的时尚杂志主编，李智雅将扮演时尚杂志社的助理——菜鸟女记者李希贞，跟柳时元饰演的全职外科医生兼餐厅主厨徐宇振上演对手戏。在杂志社内跟李希贞又有其他感情纠葛的摄影师金民俊这个角色确定由“尹恩惠的男人”李龙宇出演。因精神问题住院治疗的丽娜（江一燕 饰）丢失了部分记忆，她虽然没有结婚，却声称有一个怀胎十月生下的女儿小艾（荣益 饰）。丽娜的恢复情况良好，只差身为医学泰斗的爷爷徐东哲能够签字就可以出院。表情凄楚的丽娜再也无法忍受对女儿的思念，她想方设法从医院逃了出去，回到家中。然而奶奶口口声声说她从未生过孩子，丽娜却目睹爷爷和奶奶带着女儿开车逃走的一幕。谁知途中他们遭遇严重车祸，两位老人当场死亡，小艾则侥幸逃生。丽娜如愿见到了女儿，并且继承了爷爷留下的房产和遗物。 　　她带着小艾来到远离城市喧嚣的别墅生活，快乐的时光并未持续太久，难以预料的恐怖则席卷而来……从小在省委大院长大的杨志南与同是高干子女的尚莉莉偶然邂逅，两情相悦。而与志南一同长大的同学兼好友周海涛竟也同时爱上了莉莉。志南的母亲却早已把有望成为省委副书记的宋光明之女宋乔娅看作内定的理想儿媳，因为这对志南的父亲、副省长杨越清在政治上是有帮助的。周海涛的妹妹周海青与志南青梅竹马，她错位地把兄妹情当作爱情，于是她找到莉莉和乔娅大闹了一场。