This design is mainly directed against protein fibre spinning production line drawing machine design data.

本次设计，主要是针对蛋白纤维纺丝生产线牵伸机的设计计算。

youdao

This design is mainly directed against protein fibre spinning production line drawing machine design data.

本次设计，主要是针对蛋白纤维纺丝生产线牵伸机的设计计算。

youdao