It is found that the exact micro-hardness value of polycrystalline diamond compact (PDC) is got with 4.9N by Knoop indenter.是什么意思_It is found that the exact micro-hardness value of polycrystalline diamond compact (PDC) is got with 4.9N by Knoop indenter.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句