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2019-12-19View Original

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本帖最后由青涩年华于 2019-12-19 08:01 编辑填空题：空气在标准状态下密度为1.29 kg/m3，在0.25Mpa下（绝压）80度时的密度为（）。产生流体阻力的原因有（）和（）。答案：2.5kg/m3，内縻擦力，流体的流动状态提示：能阐述出解题过程的给予额外奖励，答案回复可见！

Reply #22019-12-19

2.64 质点摩擦的黏性和质点撞击的惯性

Reply #32019-12-19

2.49kg/m3,内摩擦力，流体的流动状态

Reply #42019-12-19

2.5 kg/m3，内縻擦力、流体的流动状态

Reply #52019-12-19

2.5kg/m3，内縻擦力，流体的流动状态

Reply #62019-12-19

2.5?kg/m3，内縻擦力、流体的流动状态

Reply #72019-12-19

2.5kg/m3 内摩擦力流体的流动状态

Reply #82019-12-19

2.5 kg/m3，内縻擦力、流体的流动状态

Reply #92019-12-19

2.5kg/m，流体粘性带来的粘滞阻力，物体周围流体流速差引起的压差阻力

Reply #102019-12-19

2.64kg/m3；内縻擦力、流体的流动状态

Reply #112019-12-19

2.5Kg/m3 内摩擦力流体的流动状态

Reply #122019-12-19

2.5kg/m3，内縻擦力，流体的流动状态

Reply #132019-12-19

2.5Kg/m3? ? 内摩擦力? ? 流体的流动状态

Reply #142019-12-19

空气在标准状态下密度为1.29 kg/m3，在0.25Mpa下（绝压）80度时的密度为（ 2.64 ）。产生流体阻力的原因有（黏性）和（流速）。

Reply #152019-12-19

2.5kg/m3；内摩擦力，流体的流动状态。

Reply #162019-12-19

2.64；粘性；动量交换

Reply #172019-12-19

2.5Kg/m3? ? 内摩擦力? ? 流体的流动状态

Reply #182019-12-19

2.5kg/m3，内縻擦力，流体的流动状态

Reply #192019-12-19

2.5kg/m3，内縻擦力，流体的流动状态

Reply #202019-12-19

2.5kg/m3，内縻擦力，流体的流动状态

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