knuckle guard
... 关节造影片 {医} arthrogram; 关节罩 knuckle guard; 关节照相术 arthrograhy; ...
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瑞典进口FUMAX万向抽气罩：所有的管子和关节采用PP材料和与气流接触的金属部件采用不锈钢材料。
Sweden FUMAX Fume exhaust: all pipes and joints are made of PP and all metal components in contact with the air flow are made of stainless steel.
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