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石油化工
Petroleum Chemical Industry
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煤炭礦山
The Coal Mine
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國防工業(yè)
National defence industry
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交通運(yùn)輸
The transportation
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糧食加工
Food processing
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電力安全
Electric power safety
應(yīng)用領(lǐng)域
Application
手機(jī)網(wǎng)站