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.
随牵伸速率的增大，LDPE相结晶度出现先增加后减小的变化，晶体缺陷增多。
The crystallinity of LDPE increased firstly and decreased later and the crystal defects might increase as drawing rate increased.
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