GB/T 26557-2021吊笼有垂直导向的人货两用施工升降机标准
英文:Builders hoists for persons and materials with vertically guided cages GB/T 26557-2021介绍: 国家标准《吊笼有垂直导向的人货两用施工升降机》由TC3...
英文:Builders hoists for persons and materials with vertically guided cages GB/T 26557-2021介绍: 国家标准《吊笼有垂直导向的人货两用施工升降机》由TC3...