Warning: file_put_contents(/www/wwwroot/ppbbu/laei.cn/cache/225836fa47853b38c48a06db8db835bd.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/laei.cn/index.php on line 58 blind hatch是什么意思，blind hatch的翻译，blind hatch音标、读音、用法和例句_按摩法牛津词典
Fast-opening blind is applied in the circular hatch of pressure pipeline and pressure vessel, which can be opened and closed fast. 快开盲板是用于压力管道或压力容器的圆形开口上并能实现快速开启和关闭的一种机械装置。