The mass transfer coefficient was higher for the big porosity membrane than for the small porosity one at same experiment condition.
同一传质体系，在相同流动条件下孔隙率大的膜的传质系数大于孔隙率小的膜的传质系数。
How to confirm the internal boundary condition is a difficulty for above fluid-solid coupling heat transfer system.
确定此系统的内部边界条件成为发动机传热研究的难点。
It is concluded that cross jet can achieve a good condition of heat and mass transfer for the combustion of pulverized coal in front of a tuyere.
这表明交叉射流为煤粉在风口前的燃烧提供了良好的传热和传质条件。
The boundary condition of temperature field for waved-edge milling insert is researched based on the heat transfer, fluid dynamics and metal cutting theory.
通过传热学、流体力学、切削理论的综合运用对波形刃铣刀片温度场边界条件进行了研究。
Mastering the air flow and heat transfer condition in engine compartment of tank is an essential precondition for designing engine device, transmission device and cooling system rationally.
掌握坦克动力舱内空气流动与传热状况，是合理设计其动力装置、传动装置和冷却系统的必要前提和重要环节。
Therefore, combined with mass and heat transfer in liquid film, it is important for optimizing operation condition and enlarging equipment to study rarefied gas flowing in distillatory.
因此，结合分子蒸馏液膜传质和传热过程，研究蒸发区间稀薄气体的运动规律对工艺优化和分子蒸馏器放大生产具有十分重要的意义。
In this scheme, an MS USES a low transmission rate for data transfer when MS is within high interference region to avoid wasting bandwidth by transmitting data in the condition with high interference.
这个方案是当一个MS位于高干扰区域时，为了避免浪费带宽，对数据传输采用低的传输速率。
This article studies benzyl - triethyl ammonium chloride as catalyst of phase - transfer to prepare for phenyl acetate. Get the best operating condition and get the yield of 86%.
研究了以苄基三乙基氯化铵为相转移催化剂制备乙酸苄酯，得出了最佳操作条件，使反应收率达86%。
It is difficult to confirm the internal boundary condition for the above fluid-solid coupling heat transfer system.
确定上述固体、流体耦合传热系统的内部边界条件成为发动机传热研究的难点。
The fluidized-bed heat exchanger within which the solid particles are kept in a fluidized condition by the fluid medium, so as to achieve a good heat transfer has a broad prospect for its application.
在流化床换热器中，固体颗粒在流化介质作用下保持流化状态，因此有着良好的传热性能，应用前景广阔。
If you transfer the balance to a warmer area, make sure to condition it for about 2 hours at room temperature, leaving it unplugged from AC power.
当把一台放在较低环境温度中的仪器搬到环境温度较高的工作间后，应将仪器在工作间里静放约2小时，并切断电源。
In addition, Profile index of hot rolled transfer bar and material used for cold rolling and optimization of load distribution under conventional hot rolling condition were quantitatively analyzed.
同时针对热轧中间坯、热轧供冷轧原料的板形指标，传统热轧条件下如何优化负荷分配等问题进行了定量分析。
It is difficult to confirm the internal boundary condition for the fluid-solid coupling heat transfer system.
固流耦合的办法可以将固、流结合面上比较难确定的外部边界转化为系统的内部边界。
OBJECTIVE To investigate the optimum condition of polyethylenimine(PEI) for gene transfer to A549 cells.
目的考察并确定多聚乙烯亚胺（PEI）最佳的体外细胞转染条件，评价PEI作为基因转染试剂的可行性。
So the present model satisfactorily indicates the mass transfer condition in CTRDC and can be used in operation calculation and scale up design for CTRDC.
计算结果与实验测定值相当吻合，说明模型能较好地反映CTRDC中的传质状况，可用于CTRDC塔高的设计计算。
So the present model satisfactorily indicates the mass transfer condition in CTRDC and can be used in operation calculation and scale up design for CTRDC.
计算结果与实验测定值相当吻合，说明模型能较好地反映CTRDC中的传质状况，可用于CTRDC塔高的设计计算。
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