The cold extrusion process and mould design have been introduced of the pressing drill sleeve.
介绍了冲钻套筒的冷挤压工艺、 模具设计。
Please be noted pressing on sleeve and front pocket.
请留意袖和前袋的烫工。
It is an integral entity which is made up of a manual corrugated pipe or sleeve piston pump and a flow controlling valve. It is suitable for liquid suction, pressing and siphoning.
本发明公开一种用于输送液体的手动泵阀管，它是由一个手动波纹管或套筒活塞泵，分别同一个流量控制阀门组合为一体。
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