Simultaneously different rotary angles of a rubber tongue piece also play the speed control function.

同时橡胶舌片旋转不同的角度也起到调速作用。

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The stress absorbing frame can be a gap set on the circumference of the cantilever tongue, and can also be a notch set in the cantilever tongue piece.

所述应力吸收结构可以是设置在悬臂舌片周边的缺口，也可是设置在悬臂舌片的槽口。

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The cantilever tongue piece has a stress absorbing frame with at least a part being hollow to absorb the stress produced on the cantilever tongue piece.

所述悬臂舌片具有至少一部分镂空的应力吸收结构，以吸收产生于悬臂舌片上的的应力。

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