- 1. Physical and mechanical properties of a plastic pirn are important indexes of its quality Characteristics.
- 塑料纬纱管物理力学性能是其质量特性的重要指标。
youdao
- 2. Physical and mechanical properties of a plastic pirn are important indexes of its quality Characteristics.
- 塑料纬纱管物理力学性能是其质量特性的重要指标。
youdao