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1·The locking block mechanism clamping better than now screw clamp mechanism.

利用挟持块锁固较目前现行锁固方式更为紧固。

2·The band drawing mechanism is composed of a band clamping slide block and a band drawing feed screw connected with a loose pin at one end of the slide block.

抽带机构由一个夹带滑块和与滑块一端活销接的抽带丝杠组成。