The hydraulic fluid viscosity, the volumetric efficiency and the hydraulic system working efficiency drops, divulging increases, even causes the mechanical device to be unable the normal work.
液压油黏度、容积效率和液压系统工作效率均下降，泄漏增加，甚至使机械设备无法正常工作。
2
Uh, Normal. Proboscis viscosity.
嗯，鼻部粘度正常。
3
The problems in the exploitation of such reservoirs are that the high viscosity leads single well to low productivity, and the sand production is also high, affecting the normal production.