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ma_wyzg: 扬程就是高度,弯头要影响水压的。 (2012-07-27 11:55) n\= (S9
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瘦肉:如果是至高点在扬程之内,那走平行的线长度受不受影响呢 (2012-07-27 12:18) c{ 7<H
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三江鱼友:弯头多,管长有阻力水流就小 rD:gN%B= (2012-07-27 13:24) Ukk-(gjX
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