water softening [化] 水軟化water softener 軟水器；[助劑] 軟水劑water soaking 水浸；水力除灰water snow [水文] 水雪；濕雪water snake water smoke 海面蒸氣霧；大風(fēng)雪；水煙water sluice valve [機(jī)械工程]制水閥water slide 水滑道water skiing 滑水water ski 滑水橇water side water shortage 缺水；水量不足；枯水water shock-tube [機(jī)械工程]水激波管water shield 莼菜；防水罩，擋泥板；密封條water shed water service pipe [土木建筑工程]生活用水管給水管[交通運(yùn)輸工程]給水管供水管water service cock 供水旋塞water service 給水，供水；供水裝置water separator [機(jī)] 水分離器；脫水器；干燥劑water self purification [地球科學(xué)]水體自凈酌