density gradient tube
常见例句
- The article discusses a new method for measuring the blending rabbit hair-wool blended yarn which has two or three components the method of density-gradient tube.
本文研究探讨了一种新的测试二比例、三比例兔毛、羊毛混纺纱的纤维含量测试方法——即密度梯度管法。 返回 density gradient tube