- 1. step safety device: 梯级安全装置
... step roller track 梯级导轨 step safety device 梯级安全装置 step starting 分级起动 ...
dict.youdao.com - 2. broken step safety device: 梯级破列安全装置
dict.youdao.com - 3. step chain safety device: 梯级断链安全装置
dict.youdao.com - 4. step upthrust safety device: 梯级翻转保护装置
dict.youdao.com - 5. broken step chain safety device: 梯级链断列触点
dict.youdao.com - 6. Step Safety Switch Device: 梯级下陷保护装置
dict.youdao.com - 7. Step trap safety device: 梯级下陷保护装置
dict.youdao.com
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