The advanced small gasturbines feature small mass flow ratio, short vanes and blades with low aspect, high second flow and blade tip leakage losses, and low efficiency.
先进的小发动机涡轮的流量小，叶片短，展弦比低，二次损失及叶尖漏泄损失大，效率低，温度高冷效差。
The influence of blade number, blade thickness, location of splitter blades and tip clearance on mass flow, pressure ratio and efficiency is showed.
讨论了改变叶片数目，增加叶片厚度，调整分流叶片周向位置以及增加间隙高度等对离心叶轮流量、压比和效率等总体性能的影响。
A method of stepped-diameter design for pneumatic conveying pipelines, as well as relationship among pressure loss, ratio of material to air, and mass flow rate of materials etc.
介绍气力输送管道的变径设计方法和变径管道气力输送试验中压损、料气比、物料质量流量等间的关系。
With increase of mass flow rate, solid-gas ratio increases first and then decreases.
随着煤粉的输送流量的增大，固气比先增大后减小。
Due to the thrust reverser guide vane not considered in the model, the parameter (ie. thrust reverser mass flow ratio) that is proportional to reverser thrust was used to evaluate the performance.
在计算模型中没有考虑反推导叶，为此，用与反推力成正比的参数，即反推质量流量比来衡量性能的优劣。
The influences of key design and operating parameters, such as bypass air ratio, compressor speed and total air mass flow rate etc.
分析了空气旁通率、压缩机转速及空气质量流量等主要设计及运行参数对干燥性能的影响。
First, experimental study on the influence of air temperature, velocity, initial moisture content of wood particles and mass flow rates ratio in the process of ISD has been performed.
首先，在不同气流温度、温度、流量及不同刨花初含水率、载带率条件下进行刨花对撞流干燥实验。
By analyzing the volume mass-transfer coefficient, the optimal operating flow-ratio and packed density were obtained.
通过考察体积传质系数，确定了纤维液膜萃取分离器的最佳填充密度和最佳流量比。
Two impellers are redesigned using the optimization system. In the whole mass flow ranges at design rotating speed, the efficiency is improved obviously and the pressure ratio keeps nearly unchanged.
采用所研制软件，对两个离心压气机工作轮进行优化设计，优化工作轮达到在压比近似不变的前提下效率有效提高。
The influences of key design and operating parameters, such as bypass air ratio, compressor speed and total air mass flow rate etc. , on the performance of heat pump microwave drier were investigated.
分析了空气旁通率、压缩机转速及空气质量流量等主要设计及运行参数对干燥性能的影响。
But it has smaller volume than displacement compressor at the same mass flow rate; and higher pressure ratio and efficiency than impeller compressor.
且尺寸体积远小于同流量的容积式压缩机，稳定性和压比也比同流量的条件下的叶轮式压气机有所提高。
The dryness and mass flow rate of inlet pulp have much effect on distribution of dried plant fibers, so the suitable preceding water content ratio is 376%.
进入干燥系统的竹纤维浆料含水率和载带率对干燥后竹纤维原料的分散性影响较大。
The dryness and mass flow rate of inlet pulp have much effect on distribution of dried plant fibers, so the suitable preceding water content ratio is 376%.
进入干燥系统的竹纤维浆料含水率和载带率对干燥后竹纤维原料的分散性影响较大。
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