bandwidth expansion ratio 带宽扩展率 ; 频带展宽比 ; [电子] 频带扩展比 ; 带宽扩展比
foam expansion ratio 泡沫膨胀比 ; 发泡倍数
expansion ratio of turbine 涡轮膨胀比
combustion expansion ratio 燃烧膨胀比
area expansion ratio 喷嘴膨胀系数
initial expansion ratio 初期膨胀比
bed expansion ratio 床层膨胀比
Sand expansion ratio 砂胀比 ; 砂膨涨比
volume expansion ratio 扩容率 ; 体积膨胀率
For any given portion of air, the greater expansion ratio allows more energy to be converted from heat to useful mechanical energy meaning the engine is more efficient.
对于任何给定的空气部分，更强大的扩展比允许更多的精力从热量转换为有用的机械能，这意味着发动机效率更高。
Because of the large expansion ratio of liquid to gas, it is very important to provide adequate ventilation in areas using liquid nitrogen.
因为液体到气体的大膨胀率，为正在使用液氧的地方提供充分的通风非常重要。
With increase of bed height, air pressure and power consumption rise, expansion ratio of the bed decreases, but the density stability and critical fluidized velocity of the bed are hardly changed.
随着床层高度的增加，所需风压及功率增大，膨胀率有所降低，而床层密度的稳定性和起始流化气速几乎不变。
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