EXTEC I Synthetic Diamond Polishing Compounds are formulated with synthetic monocrystalline diamond. Monocrystalline diamond powders exhibit a block structure for strength.是什么意思_EXTEC I Synthetic Diamond Polishing Compounds are formulated with synthetic monocrystalline diamond. Monocrystalline diamond powders exhibit a block structure for strength.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句