这种突变体可被视为扳手套筒上可以从标准单位转换为公制单位的开关。
Think of it as switching the sockets on a wrench from standard to metric.
最初的设计采用了六角扳手连接到限位开关轻轻敲击在打印床上的自校准不同的位置。
The original design uses an allen key connected to a limit switch to gently tap on different location on the print bed to self calibrate.
用专用扳手按指示要求转动操作键90度即可实现开关。
With special spanner according to instruction and requirement to roll operational key 90 degree, so that can achieve to open and close.
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