The numerical value of a measurement should always be expressed together with the correct unit. In a problem,units are multiplied, divided, and cancelled exactly as numbers would be.
这句话怎么翻译呢？书面语言
The numerical value of a measurement should always be expressed together with the correct unit. In a problem,units are multiplied, divided, and cancelled exactly as numbers would be.
测量数值经常是和单位一起来表现的。在一个问题中，单位随数值或分开，或叠加，抑或去除！
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