chainless

The combination of the chain and chainless principles ensure the dimensional stability of the knitted fabric.

这种直辊与板链相结合的结构设计保证物的稳定性。

This is converted into electricity and can be fed directly to the motor giving a chainless bicycle but also to charge a battery.

这是转换成力，可直喂养的机给链自行车，而且充。