完全实现度量衡单位的单轨制，需要一个过程。
Time is needed to completely achieve the single unit of yard-stick measurement.
本年鉴所使用的度量衡单位均采用国际统一标准计量单位。
The units of measurement used in this book are internationally standard measurement units.
流域泥沙输移比与流域面积不存在固定的线性关系，其根本原因在于流域面积是度量衡单位，而不是影响因素。
The sediment delivery ratio is not correlative with the river basin area, because which is not a influence factor but a units of measurement.
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