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〔中国选定的非SI的国家法定计量单位〕
释
Knot
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航行中表示速度的非国际单位制单位。定义为在1小时(h)的时间间隔内航行1海里(n mile)的速度,符号kn。是中国的法定计量单位,仅用于航海。
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jet
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partial quotient
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