“等容”的英语？

等容粒径在沉沙输移中意义不大.The nominal diameter has little significance in sediment transportation.“等容粒径”是某一球体直径,它与某已知的颗粒体积相等.Nominal diameter is the diameter of a sphere of the same volume as the given particle.最高气缸压力高的循环燃烧速率快、燃烧过程...