随着煤粉的输送流量的增大，固气比先增大后减小。
With increase of mass flow rate, solid-gas ratio increases first and then decreases.
实验表明：随着油水比的增大，液体的体积模量也是先增大后减小。
Experiments show: Liquid bulk elastic modulus is increased and then decreased with the increase of ratio of oil to water.
干缩试验结果表明：随着失水率的增加，二灰稳定土的干缩系数先增大后减小。
Dry-shrink tests show that the dry-shrink coefficient firstly increases, then decreases with the increment of the increment of the water loss rate.
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