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...
Do you intend to employ hostesses , hostess leaders, dancing partners, dancing instructors?你是否打算聘请女招待、女招待领班 、 舞伴 、 舞蹈导师?Air hostesses all smile when they serve the passengers.空姐们为乘客服务时总是满脸笑容。There are a lot of good - loo...