“动量衡算”简单造句，动量衡算造句子

1、Making a living as a door-to-door salesman demands a thick skin, both to protect against the weather and against constantly having the door shut in your face. Bill Porter puts up with all this and much, much more.

3、对反应注*成型机所采用的碰撞混合器进行分析，并就其进料喷嘴及混合室中的物料流动进行了能量及动量衡算。

2、通过对床中物体表面与碰撞颗粒流之间的动量衡算，将颗粒流动量通量与颗粒的碰撞压力相关联，建立了流化床中颗粒碰撞压力的理论模型。