    ̲äˮŷ
    (1) ƻױʱڿ0.4m0.3mˮػܱߺݺ15mһʯγˮäϵͳ
    (2) ˮÿ30mһֻֻÿһֻˮֱ1m1.0mڲñשԤƣ 0.3mʯɰˮá
    (3) ˮͼˮӦһ߲
(4) ʩֳҪƵˮˮϵͳ ֹرˮڡ

