Only those items of equipment that have protection ratings for the prevention of sparks or high temperatures may be operated in hazardous areas.

只有这些项目的设备，如对火星或高温的预防保护率可在危险区域经营。

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Only those items of equipment that have protection ratings for the prevention of sparks or high temperatures may be operated in hazardous areas.

只有这些项目的设备，如对火星或高温的预防保护率可在危险区域经营。

youdao