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emissions property
相关语句
  污染物排放特性
     PAHs Emissions Property and Its Catalytic Decompose Investigation During Combustion Process
     燃烧过程中多环芳烃类污染物排放特性及其催化分解实验研究
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     Then, with the premise of no any modification or optimization adjustment on the engine, the paper compares economy property, power property, exhaust emissions property and combustion characteristics when gasoline and compound alcohol fuels are used for CA6102 petrol engine.
     然后,在发动机未作任何改动或优化调整的前提下,通过台架试验,比较了CA6102型汽油机燃用汽油和醇类混合燃料后的经济性、动力性、燃烧特性以及排放特性。
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The impregnated barium scandate dispenser cathode used in microwave tulbes, es-pecially in gyrotrons, has been investigated in following aspects: (1) pulse emission property and work function distribution; (2) electron initial velocity distribution in pulse operation; (3) the effect of pulse duration ratio; (4) anomalous Schottky effect under high electric field. Some useful results are obtained: the pulse emission current density is higher than 20 A/cm2 (when t=850℃) ; the anomalous Schottky effect...

The impregnated barium scandate dispenser cathode used in microwave tulbes, es-pecially in gyrotrons, has been investigated in following aspects: (1) pulse emission property and work function distribution; (2) electron initial velocity distribution in pulse operation; (3) the effect of pulse duration ratio; (4) anomalous Schottky effect under high electric field. Some useful results are obtained: the pulse emission current density is higher than 20 A/cm2 (when t=850℃) ; the anomalous Schottky effect is observed when the eiectric field is higher than 10~4 V/cm; the cathode has a flat Ja-fτproperty when the pulse duration ratio is in the range of 5×10-3-4×10-2 and an emission current density of 8.8A/cm2 is drawn. In the end, the obtained results are discus-sed in relation to the surface analysis of the cathde.

本文对渍制钪酸盐钡钨阴极的脉冲性能作了下述几方面的研究。(1)脉冲发射水平和逸出功分布;(2)脉冲运用下的电子初速分布;(3)脉冲工作比效应;(4)强场下的非常肖特基效应。 本阴极在T_k=850℃下能提供的脉冲发射电流密度大于20A/cm~2;平均逸出功=1.7eV;发射的不均匀性与国外报道的M型阴极的相近;在脉冲运用下,电子速度的分散值低于氧化物阴极的。本阴极在场强高于1×10~4V/cm时,出现非常肖特基效应,本文用S值来表征。本阴极的S值明显高于渍制铝酸盐钡钨阴极和L阴极的。造成非常肖特基效应的主要原因是表面逸出功不均匀。在脉冲工作比fτ=5×10~(-3)—4×10~(-2)范围内,支取8.8A/cm~2时,本阴极有良好的平坦fτ特性,所以适用于长脉冲、大功率毫米波器件。 最后结合国内外对这种阴极的表面分析结果,对本文的实验结果进行了讨论,这些讨论有助于阐明本阴极的发射机制。

This paper describes acoustic emission property of ductile stainless steel materials and detecting for small stainless steel pressure vessels. The results show that monitoring the pressure and demolition test of stainless steel pressttre vessels is possible by acoustic emission technique.

本文介绍了韧性不锈钢材料的声发射特性,以及对小型不锈钢压力容器进行声发射检测的结果。结果表明,用声发射监测不锈钢容器的耐压试验和爆破试验是可行的。

In this paper, the effect of the gasoline-air mixture added with a minimum amount of hydrogen on the ecomomy and emission property of the gasoline eigi e has been investigated.The experiment shows that both the economy and emission properties are improved and the combustion process has been improved.

本文研究了向汽油机的混合气中掺入少量氢后对其经济性和排放特性的影响。试验结果表明氢的加入改善了发动机的燃烧,故二者均有改善。

 
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