从理论上对两个定义下的矩形管道单位长度摩擦阻力进行了分析和论证。
Friction resistance of unit length of rectangular pipeline under the two definitions was analyzed and demonstrated theoretically.
从理论上对两个定义下的矩形管道单位长度摩擦阻力进行了分析和论证。
Friction resistance of unit length of rectangular pipeline under the two definitions was analyzed and demonstrated theoretically.
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