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safety class

  • 安全等级:用于评估和分类事物、设备或环境的安全性的等级制度。

网络释义

短语

safety classes of building structures 建筑结构安全等级

Electrical safety classes 安全级别

safety classes of structure 结构安全等级

Safety Requirement Classes 安全要求等级

 更多收起网络短语

原声例句权威例句

  • "We went to the hazmat safety classes, and you have one guy telling you you don't want to be in it.

    VOA: standard.2010.05.06

  • Sometimes they're reluctant to take part in important training such as fire safety classes and child identification programs, which guard against abduction.

    VOA: standard.2010.07.22

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