A series of friction and wear tests were carried out on Si3N4 ceramic against metal pairs using a ring on block wear test machine, under paraffin oil and paraffin oil added with 0.5% ZDDP additive lubrication condition.是什么意思_A series of friction and wear tests were carried out on Si3N4 ceramic against metal pairs using a ring on block wear test machine, under paraffin oil and paraffin oil added with 0.5% ZDDP additive lubrication condition.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句