standard test method for metal powder meaning in English
用氦或者氮测比重法测定金属粉末骨密度试验方法
Examples
- Standard test method for metal powder specific surface area by physical adsorption
物理吸收法测定金属粉末特定表面积的标准试验方法 - Standard test method for metal powder skeletal density by helium or nitrogen pycnometry
用氦或氮比重瓶测定法测量金属粉末轮廓密度的标准试验方法