产品说明：该产品分为软轴髓腔扩大器和硬轴髓腔扩大器；

Instructions: the product is divided into soft shaft pulp cavity hole opener to a pulp cavity axis and hole opener to;

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为了扩展车架并打造一个可调节平台，蒂尔在自行车中间设计了一个既轻且硬的长轴。

To extend the frame and create an adjustable platform, Teal designed a long span in the middle of the bike that was light and rigid.

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对于传动轴平衡机来说，硬支承所能达到的精度也远远超出了实际需要。

For the drive shaft balancing machine, the hard bearing can achieve the accuracy is far beyond the actual needs.

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