This means the compression ratio is smaller than the expansion ratio.
这意味着压缩率比膨胀率小。
This paper has simulated two-phase flow in a small expansion ratio nozzle.
本文对小扩张比喷管内的两相流场进行了数值模拟。
When the expansion ratio becomes larger, both thrust and specific impulse will increase.
适当增大扩张比能提高微喷管的性能。
A power correlation between expansion ratio and Mach number at the nozzle outlet was found.
并给出了膨胀比与喷嘴出口马赫数之间的幂指数关系。
This expansion ratio also allows atmospheres of oxygen-enriched air to form in the area surrounding a release.
该膨胀率还导致排气口附近区域形成富氧气氛。
Moreover, the expansion ratio of scale factor and the variation ratio of string coupling constant are calculated.
另外，计算了标度因子的膨胀比和弦耦合常数的变化比。
The EG with bigger particle size and higher expansion ratio usually has better flame-retardant synergistic effect.
粒径和可膨胀倍数较大的EG具有更好的阻燃增效作用。
Crispness, bowl life, WAI, WSI, bulk density, solid density, and expansion ratio were analyzed as the main indexes.
选取脆性、保脆性、WAI、WSI、体积密度、固体密度和膨化度为主要指标进行研究。
When touching water, the water shutoff agent will swell. In high concentration brine, the expansion ratio is yet higher.
该堵剂遇水会膨胀，在高矿化度水中膨胀率也较高。
With the increasing of pressure of gas generator under less injector number and expansion ratio, combustion efficiency increase.
在喷嘴数目较少和扩张比较小时，增加燃气发生器工作压强补燃效率增加。
The expansion ratio is related to the liquid flow rate, fluidization velocity and free descending velocity of the packing material.
填料膨胀率的大小与液体流量、填料的流化速度及自由沉降速度有关。
The swelling deformation properties of expansive rock during moisture absorption are studied by means of the expansion ratio tests.
对南水北调中线强膨胀岩重塑样进行了膨胀率试验，分析吸湿条件下膨胀岩膨胀变形规律。
However, excessive temperature and excessive moisture content reduced in-vitro protein digestibility and expansion ratio, respectively.
机筒温度过高反而使蛋白质体外消化率减小，水分含量过高反而使膨化度减小。
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。
In addition, single factor effect analysis showed that polypropylene fiber has less effect on expansion ratio and relative dynamic modulus.
此外，通过单因子效应分析可知聚丙烯纤维对膨胀率和相对动弹模的作用效应较小。
The effect of inlet size, inlet Angle, dome height, primary nozzle expansion ratio and nozzle Numbers on combustion efficiency were taken into account.
考虑了进气道尺寸、进气夹角、头部距离、一次喷嘴扩张比和喷嘴数目等结构因素对补燃室掺混与燃烧性能的影响。
The long-term expansion potential due to AAR of alkaline cement system is discussed with measuring the change of AAR expansion ratio of mortar at different age.
通过测定砂浆经不同养护阶段的碱集料反应膨胀率变化，探讨了碱性水泥系统碱集料反应的长期膨胀潜力。
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。
The power characteristics of a helical screw expander during its isentropic expansion was studied in detail with the concept of expansion ratio of peak power being proposed.
本文探讨了以汽水混合物为工质的螺杆膨胀机的定熵膨胀功率特性，提出了峰值功率膨胀比的概念。
Because of the large expansion ratio of liquid to gas with cryogenic liquids, it is very important to provide adequate ventilation where cryogenic liquids are stored and used.
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。
Note that the compression ratios shown above reflect the expansion ratio, which is the ratio of the combustion chamber volumes when the piston is at Bottom dead centre and Top dead centre.
请注意，压缩比上述反映膨胀率，这是燃烧室的量的比例时，活塞的下死顶死中心，中心会显示。
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。
This helps customers to decide what would be the optimal expansion factor based on their current compression ratio and CPU overhead.
这将帮助客户根据其当前压缩比和CPU开销确定最优的扩展因数。
In a reversal of current design trends the MIT concept increases the bypass ratio by minimizing expansion of the overall diameter of the engine and shrinking the diameter of the jet exhaust instead.
与现行设计趋势相反，麻省的概念通过最小化发动机总体直径的尺度以及相应缩小喷气排放直径来增加涵道比。
Since you often won't get numbers which exactly match the desired ratio, you could do a continued fraction expansion of their quotient.
因为你往往不会得到数完全正确比赛所需的比例，你可以做一个连分数他们的商展开。
During the swelling capacity test of the reinforced soils under load, three different reinforcement ratio samples are tested in order to reduce their expansion of the soils.
在加筋土有荷载膨胀量试验中，取三种不同加筋率的试样进行试验求其膨胀率。
The effect of component ratio (in % of volume) on thermal expansion was measured.
测定了复合材料中不同复合比对热膨胀性能的影响。
In recent years, with the rapid expansion of graduate enrollment, pupil-teacher ratio has increased rapidly.
近年来，硕士研究生招生规模迅速扩大，生师比也增长迅速。
In recent years, with the rapid expansion of graduate enrollment, pupil-teacher ratio has increased rapidly.
近年来，硕士研究生招生规模迅速扩大，生师比也增长迅速。
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