Warning: file_put_contents(): Only 0 of 6064 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/201990.com/index.php on line 55 screw lift valve例句_screw lift valve英汉例句_screw lift valve双解例句_耀久九英英词典
Unscrew the Allen screw in the middle of valve cap and lift up the cap just enough to pick up the old diaphragm. 旋松阀帽中间的内六角螺丝，并且提起阀帽，正好足够拿走旧阀膜。 www.instrument.com.cn