... 专业安全人员 professional safety personnel 安全人员已 Security Has 安全人员说 Security Officials Said ...
基于1个网页-相关网页
·2,447,543篇论文数据，部分数据来源于NoteExpress
Dismantling operations personnel must be approved by the professional safety and technical training, the implementation of certificates.
拆装作业人员必须经专业安全技术培训，实行持证上岗。
youdao
应用推荐
模块上移
模块下移
不移动