Other causes include loss of antifoam additives, suction leaks, poor reservoir design, using the wrong viscosity or using too much antifoam additive.

其他原因包括抗泡沫添加剂丧失，吸入泄露，蹩脚的油箱设计，粘度不对，或防泡沫添加剂使用过量。

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It is regarded that the wetting deformation is generated by the loss of matrix suction, and a constitutive relationship between lost matric suction and wetting deformation deduced.

认为湿化变形是由基质吸力丧失而产生，由此推导出丧失基质吸力与湿化变形的定量关系。

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Subsequently, the pressure loss of the air passage is analyzed, when none of winding units is splicing, in order to achieve the reasons of the pressure loss and suction uneven.

然后，从理论上对所有络筒单元均不进行捻接时的风道的压力损失进行分析，找出压力损失的原因以及吸风不均匀的原因。

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