发布时间:2025-01-31 21:00:48
不加的话,出水旋流增加了阻力,流量会有影响,并且出水口的出水会不成柱状,而是会形成离心力,到处飞溅,这与普通水龙头不加出水头,水流不稳定是一样的道理。
现在好多沉香的药用标准检验不及格不知道哪里有达标准的药用沉香片买
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