Warning: file_put_contents(): Only 0 of 6124 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/totle.com.cn/index.php on line 55 spur wheel英英字典_spur wheel剑桥英语解释_spur wheel柯林斯英文解释_乐豆毛深蓝词典
1. N a gear having involuted teeth either straight or helically cut on a cylindrical surface. Two such gears are used to transmit power between parallel shafts 正齿轮