Warning: file_put_contents(/www/wwwroot/ppbbu/80125.cn/cache/22168cfe07eaa0092f5d5d1b6a8028f0.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/80125.cn/index.php on line 58 crown radius是什么意思，crown radius的翻译，crown radius音标、读音、用法和例句_食材鋪反向词典
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。