safety inspection and test
... 黄龙病 yellow shoot 安全检测 safety inspection and test 家庭作业 homework ...
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safety inspection and test
安全检查和试验
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Here we first talk about how to regularly test and inspection of anti-falling safety Quanqi, with SC type construction elevator as an example.
这里我们先来讲讲如何定期试验和送检防坠安全器，以SC型施工升降机为例。
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