汽蚀余量
我将测试计算
La valeur NPSH existante s' endendcomme samant le NPSH donnnel system system system system system system system system system system system system system system system system system system system system system system system system system system system system system system system system system system system system system system system system system system system system system system system system ?(valeur NPSH du systemme)
Le NPSH要求在一定的空化测试条件下(例如,空化测试、气泡传播、振动、摩擦、流槽等)必须满足最小的空化值。