Warning: file_put_contents(/www/wwwroot/ppbbu/www.30232.com/cache/99cbcec24eb926ad43dd6df58b615ea6.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/www.30232.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_绍翊字体网有道词典
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