Warning: file_put_contents(): Only 0 of 7314 bytes written, possibly out of free disk space in /home/www/wwwroot/ndsq.cn/index.php on line 55 outside barrel diameter例句_outside barrel diameter英汉例句_outside barrel diameter双解例句_开心英文字典_柠咚词
The drill bit in a cone shape outside has an outer diameter larger than or equal to the drill barrel to form an outer bulge. 钻头外侧呈锥体形状，钻头外径大于或等于钻筒外径形成外凸。 ip.com