Warning: file_put_contents(): Only 0 of 6182 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/69228.com/index.php on line 55 crown radius例句_crown radius英汉例句_crown radius双解例句_魏碑心思朗文词典
Rollers are usually crowned on their ends in engineering, and the crowning parameters include crowning length and crowning radius. 工程上常对滚子摩擦副的滚子进行端部倒角，倒角参数包括倒角长度与倒角半径。