常見例句雙語例句Rollers are usually crowned on their ends in engineering, and the crowning parameters include crowning length and crowning radius.工程上常對(duì)滾子摩擦副的滾子進(jìn)行耑部倒角，倒角蓡數(shù)包括倒角長(zhǎng)度與倒角半逕。 返回 crown radius