The utility model relates to a built-in type magnetic reversing automatic reciprocating cylinder which comprises a cylinder body (3), a piston (5), an air inlet pipe (1) and an exhaust pipe (2);

一种内置式磁力换向自动往复汽缸，包括汽缸体（3）、活塞（5）、进气管（1）、和排气管（2）；

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Introduced the operation principle and features of remote control reversing air system with air door applied in Jiyi nember one district in Pingji Coal Mine.

介绍了应用在平一矿己一采区的远控风门反风系统的动作原理及特点。

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