The resistance is halved if the cross - sectional area is doubled.
如果截面积增加一倍，则电阻减少一半。
The sectional area of the suction pipeline is no less than pump flowing channel's.
吸入管路截面积必须大于或等于泵流道断面积。
The autocorrelation coefficient is constant over a cross sectional area of the jet.
在射流的横截面上，自相关系数为一常数。
Enlarging the sectional area of surge tank obviously changes minimum pressure in draft tube.
增大调压室面积会明显改变尾水管最小压力值。
Enlarging the sectional area of surge tank obviously changes minimum pressure in draft tube.
增大调压室面积会明显改变尾水管最小压力值。
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