硬质合金表观孔隙率的测试方法的英文

standard test method for apparent porosity in

• 硬质合金:    hard metal; carbid ...
• 表观:    apparent
• 孔隙:    small opening; hol ...
• 率:    rate; ratio; propo ...
• 的:    4次方是 The fourth po ...
• 测试:    test; testing; che ...
• 方法:    method; means; way ...