启闭

例句与用法

Technical code of safety inspection for hydraulic steel gate and hoist machinery
水工钢阀门和启闭机安全检测技术规程
Automatic open - close sprinkler
自动启闭喷头
Long service life . standing the test of tens of thousands opening / closing operations
启闭实验次数多达数万次，寿命长。
Changing ventilation winch
启闭风门绞车
Compact structure , well to be opened and closed , lower in height , easy maintenance
结构紧凑，启闭性好、高度小、维修方便。
Basic parameters of qpky hydraulic hoist for quick - closing hydraulic plane gate
Qpky型水工平面快速闸门液压启闭机基本参数
Technical criterion of safety inspection for hydraulic steel gate and hoist machinery
水工钢闸门和启闭机安全检测.技术规程
Design of hydraulic hoists for eccentric trunnion sector gates of xiaolangdi project
小浪底水利枢纽偏心铰弧形闸门液压启闭机设计
Screw capstan head
螺旋杆启闭器