水位差
英文例句/中文翻译:
Trickle water gently over the back of your baby's head
往婴儿的脑后部轻撩些水。
The water closed over his head.
水没过他的头顶。
To raise the water-head drop ( WHD) is unbeneficial to the recovery of the self forming bio-dynamic membrane ( SFDM).
增加出水水头不利于自生生物动态膜(SFDM)的恢复。