Electret filtration material is a kind of promising new air filtration material due to the advantages of high filtration efficiency, low flow resistance, power saving and anti-bacteria.
驻极体过滤材料具有高效、低阻、节能、抗菌等优点，是一类非常有应用前景的新型空气过滤材料。
The result of this research provides a reliable theoretical basis for using computer to calculate the turbulent flow resistance coefficient.
此项研究结果为用计算机进行紊流阻力系数的计算提供了可靠的理论依据。
The experiments show that microbe solution flooding can decrease the threshold pressure gradient, lessen the flow resistance, and extend the effective drainage distance.
与水驱相比，微生物驱油可降低启动压力梯度，降低渗流阻力，扩大有效驱动距离。
The introduction of ultrasonic vibration reduces the metal flow resistance and fluid pressure loss, raises the flow speed, raises the welding quality and facilitates welding of thick plates.
超声振动的引入降低金属流动阻力和流体压力的沿程损失，提高流动速度，提高了焊缝质量，也可有效解决厚板焊接困难。
Discharge reduction testing method is used to calculate flow resistance in fracturing process.
采用降排量测试法对压裂过程中的流动阻力进行了计算。
The flow resistance device is a important unit for achieving electron beam welding in partial vacuum.
气阻装置是实现低真空电子束焊接的重要部件。
The vascular network was smoothed afterwards to reduce flow resistance resulting from numerical networks.
此外，对血管网作了后期平滑处理，以减少数值网络引起的流动阻力。
The experimental results of the heat transfer and flow resistance of this kind of air cooler are presented.
给出了这种强化传热管束的试验测量结果。
The heat transfer and flow resistance performance of corrugated tube heat exchanger were examined by oil, water, and steam.
采用油、水、水蒸气对波纹管换热器的传热和流动阻力性能进行了试验研究。
A calculation method is presented for heat transfer and flow resistance of a spiral plate heat exchanger for the gas-liquid.
提出了螺旋板式换热器用于气-液热交换时的流动阻力以及传热设计的计算方法。
The possibility of utilizing regenerator flow resistance to suppress DC flow is theoretically and experimentally investigated.
本文理论和实验研究了通过改变回热器流阻进行直流抑制的可行性。
The equivalent radial clearance of flow resistance is an important parameter for hydrostatic bearings in theory and calculation.
等效间隙是静压支承理论分析和计算中的一个重要参数。
In order to acquire turbulent flow resistance rule in SK static mixer, a new numerical model of fluid resistance was put forward.
为了获得流体在SK型静态混合器中湍流流动时的流动阻力规律，提出一种新的流体阻力的计算模型。
The characteristic of turbulent heat transfer and flow resistance with multi-longitudinal vortexes in tube is numerically analyzed.
对多纵向涡对管内湍流换热和流阻特性进行了数值分析。
Based on the theory of fire control volume, a forced model for analyzing the component of flow resistance in fire zone was developed.
在火灾控制体理论的基础上，建立了一个用于分析火区阻力构成的火灾控制体受力模型。
The effects of the heat flux, wall temperature and flow resistance on the nondimensional entropy generation density have been discussed.
讨论了壁面热流、壁面温度及流动阻力对无因次熵产强度的影响。
At the same time, after shearing, the viscosity is lost; viscoelasticity and the ability of establishing flow resistance have decreased.
同时，聚合物溶液经剪切后，粘度损失严重，粘弹性和建立流动阻力能力下降明显。
In addition, flow resistance characteristics of various diameters of inner tubes under different flow velocity condition are researched.
本文同时还对各种不同的内插管管径下不同流速下的阻力特性进行了研究。
The grooves on the heated surface lowered the flow resistance and enhanced the film heat transfer coefficient 2-3 times that of flat plates.
相同雷诺数的槽板平均表面换热系数是平板的2～3倍，同时减小了流动阻力。
As one of the key points in the design of a pipeline transport, study on the flow resistance of pipeline sand transport is of great significance.
作为管道输送工程设计的核心内容之一，管道阻力特性的研究具有重要意义。
The influence of the mixed EMF and gaseous flow resistance on the experimental error in the oxygen measurement has also been discussed in this paper.
本文还讨论了混合电动势和气流沿程阻力对氧测量误差的影响。
One of the major measures to suppress flow instability in a boiling tube consists in increasing the flow resistance at the boiling tube inlet section.
增加沸腾管入口段流动阻力是抑制沸腾管内流动不稳定性的主要措施之一。
The simulation results show that the double inlet port has smaller local flow resistance and higher average velocity flow near TDC than the single one.
结果表明：双进气道方案局部流动阻力小，在上止点附近有较高的平均流速。
Experimental study on heat transfer and flow resistance of louver fins with 8 different structural parameters were carried out on a wind tunnel test rig.
在风洞试验台上对8种不同结构参数的百叶窗翅片进行传热和流动阻力的性能试验。
Because of the high flow resistance and the poor flowing ability, the spool valves can't meet the requirements for high velocity or huge hydraulic equipment.
同时由于滑阀流动阻力大，通流能力小，不能满足高速或大型液压设备对流量的要求。
A governing valve is the instrument for changing flow resistance and heat transfer flux of hot water, controlling pressure and temperature of heating system.
在热水供暖系统中，调节阀是改变热媒流动阻力、传热量变化及控制系统的调节装置。调节阀的选型、使用涉及多方面知识。
Active water or light oil is sent downhole through hollow rod to reduce oil flow resistance, thus producing heavy oil from deep formation through screw pump.
利用空心杆向井筒内掺入活性水或稀油，降低油流阻力，实现应用螺杆泵开采深层稠油。
A spiral-channel flow-through PCR microchip reactor with 35 cycles, which reduced the dispersion and flow resistance of reaction solution, has been developed.
研制了由内向外流动的螺旋通道微流控PCR玻璃芯片，减少了PCR反应液在微通道中流动时的分散和阻力；
The flow resistance of pile group is more complicated than that of single pile. It is difficulty to solve flow resistance of pile group theoretically at present.
桩群的水流阻力比单桩的水流阻力要复杂得多，理论上解决桩群水流阻力目前还较困难。
The flow resistance of pile group is more complicated than that of single pile. It is difficulty to solve flow resistance of pile group theoretically at present.
桩群的水流阻力比单桩的水流阻力要复杂得多，理论上解决桩群水流阻力目前还较困难。
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