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。
Tiotropium; low flow oxygen; Stable COPD; Chronic respiratory failure.
噻托溴铵；低流量吸氧；稳定期慢阻肺；慢性呼吸衰竭。
The signal loss of MRA with TOF in both fast flow and low flow was variable.
TOF法MRA对高速血流或低速血流所致的信号丢失的表现不同。
Provides superior flow characteristics and fine adjustment at low flow ranges.
流量特性稳定，低流量及微量调整容易。
The water quality was more stable in high flow period and more changeable in low flow.
丰水期水质比较稳定，枯水期水质变化相对比较大。
In the low flow rate, it is the major composition of TP, its proportion being as high as 87%.
而在低流速下，溶解性磷是TP的主要组成成分，其质量浓度的相对比例可高达87%。
Ithaca, NY. Detection of low flow or a considerable drop in flow prompted angiography and PTA.
检测发现低流速或者流速降低迅速的患者进行血管造影和经皮穿刺血管成形术。
The distribution form and the selection methods in low flow frequency analysis were introduced.
介绍枯水频率分析中的常用线型以及频率分布线型的选择方法。
This method is of some reference value for other low flow velocity system with tube of small diameter.
该法对其它小管径低流速系统有一定的参考价值。
The descaling technology with high pressure & low flow rate designed by SMS arc introduced in the paper.
本文详细论述了珠钢的高压低流量除鳞技术。
The operation was performed under deep hypothermia and extracorporeal circulation with low flow perfusion.
手术采用胸骨正中切口在体外循环深低温低流量灌注下施行。
The result shows that the preferable heat transfer effect can be acquired on the condition of a low flow rate.
研究结果表明流体绕流振动圆管时，在较低流速下即可获得较好的传热效果。
This is particularly true of controls relying on flow readings that are difficult to measure at low flow rates4.
这对于那些依赖于流量读数的控制尤其是如此，这些流量读数在低流量速率下是很难测量的。
A new structure fan with small size, high pressure and low flow-rate is designed to meet the demands of industry.
为满足工业领域对高压比、低流量风机的需求，设计了一种新型结构的小尺寸、高压比、低流量风机。
In addition, the use of low flow rate in the dry pipe is also conducive to the stability of the hydraulic system.
此外，干管中采用低流速还有利于系统的水力工况稳定性。
Objective To evaluate the effect of age on the alveolar concentration of Isoflurane during low flow rate anesthesia.
目的研究在低流量麻醉时不同年龄对异氟醚肺泡浓度的影响。
Warranting the required separation efficiency, trough and angular type separators are featured by low flow-resistance.
在保证分离效率的前提下，槽形和角形分离件具有流动阻力小的特点。
This paper presents a novel low flow scattering flowmeter and a mathematical method for its nonlinearization correction.
本文介绍和分析了一种适用于小流量散流的流量计及其非线性处理方法。
For passive material such as F5, it could cause negative effect at low flow velocity when cathodic protection was applied.
对于钝化材料(如F 5)在低流速条件下施加阴极保护可能出现负效应。
Aortic arch reconstruction was performed by hypothermic continuous low flow bypass using regional perfusion for all patients.
主动脉弓成形均在深低温低流量持续性选择性脑灌注下进行。
Based on the general theory of magnetic flowmeter, a study on the magnetic flowmeter at very low flow rate is reported in the paper.
根据电磁流量计的基本原理，对其微流量测量技术进行了研究。
METHODS Deep hypothermia low flow rate (DHLF) were used during CPB, 4:1 cold blood hyperkalemic cardioplegia were used in all patients.
方法CPB采用深低温低流量（DHLF），心肌保护为4：1高钾含血停搏液灌注。
To monitor the movement process of fissured water, self-designed a portable and microminiature device for auto - measuring the low flow rate.
为了测定裂隙岩体渗流的动态变化过程，本文自行设计了一种便携式、超小型的低流速自动测定装置。
Using the systemic and comparative methods, this paper reviews the low flow runoff from natural and anthropogenic factors, its forecast methods.
采用系统和比较的方法对影响枯水径流的自然与人为因素、枯水径流的预测方法进行总结。
The polymer solution was manifested to show the property of shear thinning at low flow rate and shear thickening if the flow rate exceeded a point.
实验发现聚合物溶液在低流速下，表现剪切变稀，超过一定流速后，表现为剪切增稠。
By means of numerical simulation, the research on inner-flow of mining contra-rotating axial flow fan working under low flow rate condition was made.
通过数值模拟手段，对一矿用对旋式轴流式通风机小流量工况内部流动进行了深入研究。
At low flow attenuation performance of semi-active muffler was computed respectively by using theoretical formula and three-dimension finite element method.
低速气流时，分别进行了半主动消声器的消声性能理论计算和三维有限元法数值计算。
Widely used in control circuits of upper hydraulic systems on truck cranes, applicable to switch valves of control oil with low flow and low pressure circuits.
广泛用于汽车起重机上车液压系统的控制回路，适用于小流量、低压力回路的控制油液的开关阀；
Widely used in control circuits of upper hydraulic systems on truck cranes, applicable to switch valves of control oil with low flow and low pressure circuits.
广泛用于汽车起重机上车液压系统的控制回路，适用于小流量、低压力回路的控制油液的开关阀；
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