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protective mask
释义
protective mask
Encyclopedia
工学
防护面罩
释
protective mask
防护面罩
用来保护面部和颈部免受飞来的金属碎屑、有害气体、液体喷溅、金属和高温溶剂飞沫伤害的用具。
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tusk shells
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tussah cocoon cooking by chemical method
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tussah silk defects
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tussock moths
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TUTT
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