net positive suction head 净正吸入压头 ; [力] 汽蚀余量 ; 净吸入头
net positive suction height 净压吸高 ; 净有效吸水高
required net positive suction head 需用净正吸入压头
net positive suction 净正吸入
NPSH Net positive suction head 净吸入头 ; 净正吸入压头
net positive suction head requirement 必须的汽蚀余量
net positive fluid balance 避免正净流液平衡
critical net positive suction head 临界净正抽吸压头
critical net positive suc-tion head 临界空蚀余量
positive net value 正的净值
When all those factors are put together and the economists calculate the numbers, it ends up being a net positive, but a small one.
当所有这些因素放在一起,并且由经济学家计算得出这些数字时,它最终的净值是正数,但只是一个很小的数。
钠离子是带正电的。
Now you have this situation where you have a droplet that is net negative or perhaps net positive.
现在的情况是那些液滴,可能是净负电,也可能是净正电。
So, when we get really close together, granted, there is a net positive negative charge with a Coulombic force of attraction.
当它们真正离得很近时,假设有一个带正负电的电荷,带有库仑引力。
And there is this separation which is a balance of attractive forces because the chloride is net negative and the sodium is net positive, but both of them, regardless of net charge, have electrons.
这里有一个平衡,引力的平衡,由于氯离子带有负的净电荷,钠离子带有正的净电荷,但是它们两个,没有考虑净电荷,电子。
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