The experiments show that microbe solution flooding can decrease the threshold pressure gradient, lessen the flow resistance, and extend the effective drainage distance.
与水驱相比，微生物驱油可降低启动压力梯度，降低渗流阻力，扩大有效驱动距离。
2
The starting resistance of a roller bearing wagon is an elementary parameter and an important basis for traction calculation and the gradient of station yard design.
车辆起动阻力是列车牵引计算、车站站坪坡度设计的基本参数和重要依据。
3
The results showed that the hardening layer has better hardness gradient and high wear resistance.