Mass flow information can be secured by using a densitometer. 质量流量的数据可借助于密度计而获得。
At the same time, the employment of the mass flow principle ensures greatly improved hank spreading, which prevents creasing. 同，设计以质量流动原理为本，可以改善纹纱的输送，避免皱褶。
The flow pattern and pressure distribution in circle passage of a gas distributor was experimentally measured and studied with LDV. 利用激光多普勒测试技术等对环形分布器内气体变质量流动规律和压强分布进行了研究。
