hold-open device中文什么意思

枪栓固定卡榫

• hold:    n. 【造船】货舱，底层舱。 hol ...
• open:    adj. 1.开着的，开放的；可进入 ...
• device:    n. 1.设计，计划；方法，手段。 ...

例句与用法

1. Building hardware - electrically powered hold - open devices for swing doors - requirements and test methods
   建筑五金.旋转门用电控器.试验方法和要求
2. Building hardware - electrically powered hold - open devices for swing doors - requirements and test methods
   建筑五金.旋转门用电动定位装置.要求和检验方法
3. En 1155 building hardware . electrically powered hold - open devices for swing doors . requirements and test methods
   建筑五金.双开弹簧门用电力开门装置.要求和试验方法
4. Building hardware - electrically powered hold - open devices for swing doors - requirements and test methods includes amendment a1 : 2002 ; german version en 1155 : 1997 a1 : 2002
   建筑物五金件.旋转门电动定位装置.要求和试验方法