塑料部件则比较理想的解决这些问题，它重量轻而且有自润滑作用。

Plastic is an ideal solution for these components because it is light and self-lubricating.

youdao

塑料部件则比较理想的解决这些问题，它重量轻而且有自润滑作用。

Plastic is an ideal solution for these components because it is light and self-lubricating.

youdao