If the transportofliquid viscosity and density difference between the larger and water, shall account for the pump parameters: flow, pressure head and shaft power.
若被输送液体的粘度和密度与水相差较大时，应核算泵的特性参数：流量、压头和轴功率。
2
Liquid biofuels are projected at 3-3.5 percent of global transport energy consumption in 2030.
预计到2030年液体生物燃料将占全球运输能源消费量的3 - 3.5%。
3
The growth is expected to continue, but the contribution ofliquid biofuels (mostly ethanol and biodiesel) to transport energy, and even more so, to global energy use will remain limited.