青云翻译

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The airtight operation, the attention ventilates.Operation as far as possible mechanization, automation.The operator must pass through trains specially, observes the working instruction strictly.The suggestion operator wears the self-absorption filtration type gas mask (whole mask), puts on the rubb

Confined to ventilation. mechanization and automation operation as soon as possible. Operating personnel must be trained, strictly comply with the instructions. Recommended that the operator wearing self-suction filter-style gas mask (full face mask, wearing rubber acids and alkalis, acids and alkal

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