W 開頭單詞
water quality 水質(zhì)
water purifier n. 凈水器
water purification system 水凈化器；水凈化系統(tǒng)；純水系統(tǒng)
water purification 水的凈化
water pumps [機(jī)] 水泵；抽水機(jī)
water pump seal cup [經(jīng)濟(jì)學(xué)]水泵水封皮碗
water pump idle gear [經(jīng)濟(jì)學(xué)]水泵惰齒輪
water pump housing [經(jīng)濟(jì)學(xué)]水泵殼
water pump 抽水機(jī)，水泵
water protecting curtain [物理學(xué)]防水帷幕
water proofness 水密性
water proof torch light [交通運(yùn)輸工程]防水手電筒
water proof glue [交通運(yùn)輸工程]防水膠
water proof electric torch [交通運(yùn)輸工程]防水手電筒
water proof 防水的；不透水的