单词：friction drag
friction drag的用法和样例：
例句
- In superplastic forming, bulk metallic glass has larger surface friction resistance than ordinary metal alloys.大块非晶合金在超塑性成形时呈现出比一般金属材料更大的摩擦阻力。
- The conditionality between the flow rate and the pipe diameter is discussed when the friction factor is fixed.文中还分析了在摩擦阻力系数一定的情况下，流量与管径的制约关系。
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