average specific frictional head loss
calculation of head loss
characteristics of chemical loss in soil
Coefficient of head loss
Coefficients of Head Loss
head loss
水头损耗
水头损失
高差损失
头损耗
压头损失
水头降
总压损失
水力损失
落差损失
过滤阻力
整粒米率
head loss due to friction
local head loss coefficient