Soil water characteristic curves in different tobacco fields decline rapidly in low suction condition and become smooth and slow while suction growing.
不同烟区的土壤水分特征曲线在低吸力时都比较陡直，随着吸力的增加特征曲线逐渐趋于平缓。
Remark gas quantity given in the table is quantity at the condition of suction vacuum.
表中气量均为所给真空度的吸入条件下的气量。
Screw pump should be in suction stop valve fully open under the condition of starting, in case of overload or empty.
螺杆泵应在吸排停止阀全开的情况下起动，以防过载或吸空。
It is very difficult to resolve or measure matric suction in engineering practice, because the matric suction is not constant especially under undrained condition.
实际工程中求解和测定吸力比较困难，特别在不排水条件下，吸力并非常量，从而难以确定。
In design condition, the flow blockage, loss, turbulence and noise at the exit focus mainly in the tip mid-passage, wake and the corner between the hub and the suction surface;
设计状态转子出口流动阻塞、损失、高水平紊流脉动及噪声主要发生在叶尖通道中部、尾迹和叶根吸力面角区；
In design condition, the flow blockage, loss, turbulence and noise at the exit focus mainly in the tip mid-passage, wake and the corner between the hub and the suction surface;
设计状态转子出口流动阻塞、损失、高水平紊流脉动及噪声主要发生在叶尖通道中部、尾迹和叶根吸力面角区；
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