标准差是方差的平方根。
冷侧真空度拐点后膜的通量与膜两侧水蒸汽分压平方根的差成直线关系,这种关系说明了水蒸汽在膜孔内的传质过程是以扩散为主;
After inflexion, the permeation flux is directly proportional to the difference of the square root of the vapour partial pressure on both sides of the membrane.
方差的正的平方根叫做标准差。
The positive square root of the variance is called the standard deviation.
方差的正的平方根叫做标准差。
The positive square root of the variance is called the standard deviation.
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