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释义 〔spirogyra〕Any of various filamentous freshwater green algae of the genusSpirogyra, having chloroplasts in spirally twisted bands. 水绵:一种水绵 属的淡水中丝状绿色海藻,具有螺旋状扭曲的带形叶绿体 〔gasket〕Any of a wide variety of seals or packings used between matched machine parts or around pipe joints to prevent the escape of a gas or fluid.圆形或带形填塞物:各种各样的填充物或包装物的一种,安于已装配的机器部件之间或管道接通处周围,以免气体或液体泄漏
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