单词	变量流
释义	变量流Flow, unsteady双向☞不稳定流--变量流
随便看	undergroundstream underground stream; subterranean stream underground street underground structure underground substation underground(subterranean)stream underground survey underground surveying underground system underground transformer underground transmission underground transmission cable underground transmission line underground traverse underground utility supply duct underground water underground water course underground water(ground water) underground water--ground water-- phreatic water underground water level underground water parting underground water table underground work underground worker underground working