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最佳答案：就是亚甲蓝试验标准methylene blue test standard的简写法,一种欧洲的试验标准
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最佳答案：pipe bracket 水管托；“喉码”
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最佳答案：introduction of metal materialsmetal materials are most widely used in our daily
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最佳答案：最直接的翻译：埋葬了我的天使.英语在不同场所,翻译的内容及具体含义是不一样的!
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最佳答案：nodizing is a conventional surface treatment technology is the use of electroche
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最佳答案：1、special operation personnel safety training2、metal material performance & stee
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最佳答案：金属显微镜
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最佳答案：I'm not sure which positon of the box corresponds to the portion as you said.Cou
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最佳答案：The little improvement of strength and toughness generates from the brittleness
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最佳答案：The preparation of metal film and its characteristics already is the microelectr