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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, The O-ring 10 is further arranged at 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, 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, and the valve body 1 is provided with a liquid inlet cavity and a liquid outlet cavity.The profit of the second scourge injury is 15%/(1-20% +10% +25% +30% +15%) = 9.375% compared with only one scourge injury.211. X.X.20据可靠消息，《狐妖小红娘》在今年要播出三部，分别是《竹业篇》《尾生篇》和《圈外篇》。目前《竹业篇》即将完结，接下来就是万众期待的《尾生篇》。《尾生篇》其实应该放在前面的，但可能是因为《竹业篇》太虐了吧，所以需要来一个轻松一点的来过渡一下，而且《尾声篇》的漫画非常的短，只有八话内容。所以放到《竹业篇》之后，非常的合适。-White ring lamp, 3 nautical miles.Attacks directed at specific applications are generally covert, smaller in scale and more targeted.However, the sharp increase in express delivery has produced a large number of discarded packages, which is not a unique phenomenon in China. How do other countries solve the problems brought about by these discarded express packages? Li Li told reporters: "Germany promulgated the Packaging Waste Management Law in 1991, so Japan also has a special Packaging Waste Recycling Law, which stipulates that different packaging wastes should be recycled separately."