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数学是研究纯量之科学。
Mathematics is the science of pure quantity.
youdao
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在做数学，那是两倍的推荐量。
Doing the math, that's twice the recommended amount.
youdao
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建立了计算充灌量的数学模型；
The numerical model of refrigerant charge is built.
youdao
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建立了计算充灌量的数学模型；
The numerical model of refrigerant charge is built.
youdao