五年级上册练习题腊肉怎么吃前怎么处理方法专利名称：FLUID-TIGHT PUSHER FOR WATCHES 申请号：JP6999872
海底两万里航行路线
申请日：19720615
公开号：JPS4824465U
短信笑话
公开日：手抄报三年级
矿泉水标准
天鹅湖19730322
专利内容由知识产权出版社提供
摘要：1377289 Watches LA NATIONALE S A 1 June 1972 [17 June 1971] 25691/72 Heading G3T A pusher compris a tube 1, screwed into a watch-ca 2, and a head 3 axially slidable relative to the tube but prevented from rotation relative thereto by corrugations 4, 5 on the head and tube respectively. The head has a non-circular crossction Fig.2, 3 or 4 (not shown), the outline of which compris convex lines only, and the asmbled pusher can be screwed into and out of the watch ca by a tool correspondingly shaped with the head. A screw 12 with a hexagonal head 14 is screwed into the head 3, axial movement of which occurs against the action of a spring 15. The pusher is rendered airtight by a packing ring 6 held in position by a split ring 8.梦到狗是什么意思
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