door closers meaning in English
关门器（非电动）
门开关器
Examples
- Door closers - holders with or without integral smoke detectors
有或无组合烟雾探测器的门闭合器 - Man : yale & towne could , uh , produce locks , hardw are , door closers , and pumps
男士：耶鲁汤尼工厂当年，嗯，生产锁、小五金、闭门器和水泵。 - Test method for door fittings of buildings - part 3 : floor concealed door closers , door closers and hinge closers
建筑物门配件的试验方法.第3部分:暗装的关门装置关门装置和铰链关门装置