词汇	observed frequency
释义	observed frequency 观察频数
随便看	water pressure explosion water pressure fluctuation water pressure gage water pressure gauge water pressure grid water pressure in control fissure water pressure loss water-pressure machinery cleaning pipeline water pressure main water pressure on lining water pressure pattern water pressure pulsation water pressure pulse water pressure pump water pressure regulating device water-pressure regulating device water pressure regulation water-pressure regulation water pressure regulation, pressure regulation water pressure regulator water-pressure regulator water pressure relay water-pressure relay water pressures water pressure tank