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1·We want to buy Socket Set, Ratchet Handle, Spanner, Air Impact Wrench, Ratchet Box Wrench, Oil Filter Wrench Automotive Parts, Components and Spares.

我们要采购套筒组，棘轮处理，扳手，空气的影响，扳手，棘轮扳手方块，机油滤清器扳手汽车零件，部件和零件。

2·This paper mainly carries on the design of hydraulic wrench structure, including the design of the hydraulic cylinder, a ratchet mechanism design and strength check.

本文主要对大扭矩液压扳手结构进行设计，包括液压缸的设计，棘轮机构的设计及强度校核等。

3·The ratchet type bent pipe wrench with repositioning rotation function is applied for fast tyre assembling and disassembling operation.

本发明令弯管扳手具有复位转动功效，以达到更快速的轮胎锁、卸作业。