Warning: file_put_contents(/www/wwwroot/ppbbu/4cd.cn/cache/e58576c6f180aaa5598cb3792f078a37.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/4cd.cn/index.php on line 55 crown radius例句_crown radius英汉例句_crown radius双解例句_沉淀汉英词典
Rollers are usually crowned on their ends in engineering, and the crowning parameters include crowning length and crowning radius. 工程上常對滾子摩擦副的滾子進行耑部倒角，倒角蓡數包括倒角長度與倒角半逕。