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  chaos power
     Based on 3 kinds of observation datasets,chaotic characteristics of atmospheric turbulence over four different surfaces are analysed. By investigating four characteristic quantities describing chaos: power spectrum, correlation dimension, Lyapunov exponents and correlation entropy, separately, some meaningful results have been derived.
     根据3 种不同观测资料,计算和分析了有关诊断具有耗散结构的系统混沌运动的特征量:功率谱、关联维数、Lyapunov 指数和关联熵。
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  “:功率”译为未确定词的双语例句
     Shaping parameters:power efficiency:>75%;
     整形参数:功率效率:大于75%;
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     The technology condition that enabled nanometer TiO_2 to achieve the best disperser effect was: Power 300W, time 10min, Temperature 20 ℃.
     在本试验所选取的各因素水平中,使纳米TiO_2达到最佳分散效果的工艺条件是:功率300W,时间10min,温度20℃。
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     Accordingtotheseresults,wethinkthatitisthebettermutagenicdoseofCO2lasserforustoirradiatericeseedswithpower-densityfrom10-15W/cm2andradiationtimefrom3to4seconds.
     CO2激光对水稻诱变处理的适宜剂量是:功率密度为10-15W,湿、干种子分别处理3和4秒。
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     the best conditions of microwave extraction are power 400w, time 60s, and the amount of oleoresin is 22.54mg/g (tomato powder).
     微波萃取的最佳工艺条件:功率400w,萃取时间50s,番茄红素提取量23.25mg/g(干燥番茄粉末)。
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     By using lattice calculation code WIMS D/4,hexagonal nodal diffusion code SIXTUS and the WIMS N1/N2 library which include the data of the nuclide H in ZrH,Er 166 and Er 167,nuclear safety parameters are analyzed of uranium zirconium hydride pulsed reactor core,power peaking factor and fuel temperature coefficient.
     应用自己扩充的含有氢化锆中氢、铒166和铒167核素数据的WIMSN1/N2数据库以及国际通用的栅元计算程序WIMSD/4和六角形节块程序SIXTUS,分析了铀氢锆脉冲堆堆芯重要的核安全参数:功率峰因子和燃料负温度系数。
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     The Method and Application of Power Evaluation for FPGA
     FPGA功率估计
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     Si Power Microwave Monolithic Integrated Amplifier
     硅功率微波单片集成电路
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A method based upon simple diffraction theory is described for the calculation of modified paraboloid reflectors to produce from a point source a shaped beam of arbitrary shape in one plane and uniformly narrow in the perpendicular planes. A specific application of the shaped beam antennas is in connection with radar antennas designed for height finding. In this case the antenna must have a sharp elevation beam for obtaining precise elevation information and a rapid elevation scan. The beam must be relatively...

A method based upon simple diffraction theory is described for the calculation of modified paraboloid reflectors to produce from a point source a shaped beam of arbitrary shape in one plane and uniformly narrow in the perpendicular planes. A specific application of the shaped beam antennas is in connection with radar antennas designed for height finding. In this case the antenna must have a sharp elevation beam for obtaining precise elevation information and a rapid elevation scan. The beam must be relatively broad in azimuth in order that the target will be held in the beam long enough to obtain height information. If a fixed minimum of illumination is to be achieved at a given linear distance on both sides of the center line of the azimuth beam, the amplitude pattern must have the so-called "double cosecant" or "beavertail" shape.

本论文讨论如何利用简单衍射理论,计算改良抛物面反射器天线幅射之图型。此反射器可将一无方向性辐射源之能量聚集于任何形状之波束中。此原理可以应用在地面上或船面上寻求飞机高度雷达天线之设计。在此类雷达中,天线之方位图型必须为“双馀割平方”式;其特性为自波束对称轴线起,至其两端,辐射一次路程之功率,与方位角之馀割平方成正比。得此图型之最简易方法为置一狭窄之铅垂金属条于一截形抛物面反射器之中心,金属条之宽度,可改变波束之方向性;其支距,即金属条与反射器之距离,可影响两反射波之位相。故改变金属条之宽度及其支距,可得欲得之图型。 利用衍射及干涉理论,计算金属条及截形抛物面所生之总图型为:在方位面内,幅射强度J_H与水平角θ之关系为: J_H =AA[sin~2(15πsinθ)/(15πsinθ)~2-2(1-cosπ/4)sin(2πsinθ)/2πsinθ(sin(2πsinθ)/2πsinθ-sin(15πsinθ)/15πsinθ)]A为辐射波振幅,A为A之复共轭数。计算之结果与实验之结果,颇为一致。

In the spectrochemical analysis of high speed steels with a small current activated a.c. arc (after Aбрамсон), the results of analysis were found to be affected by different previous heat-treatments given to the steel samples. To study this effect we selected 10 chromium steel samples of different carbon content. Spectrochemical analysis of these samples under different procedures of heat treatment shows that with an a.c. arc (5 amp.) the results of analysis of Cr for annealed and for hardened samples of the...

In the spectrochemical analysis of high speed steels with a small current activated a.c. arc (after Aбрамсон), the results of analysis were found to be affected by different previous heat-treatments given to the steel samples. To study this effect we selected 10 chromium steel samples of different carbon content. Spectrochemical analysis of these samples under different procedures of heat treatment shows that with an a.c. arc (5 amp.) the results of analysis of Cr for annealed and for hardened samples of the same steel are different and the difference increases with the increase of carbon content. We are inclined to think that in a low energy light source, the evaporation and the excitation of the alloying elements vary according to the existing form of carbon and this directly affects the results of spectrochemical analysis. The magnitude of this effect is different for different alloying elements, it is considerable in the case of Cr but is inappreciable in the case of Mn and Si.

我们用爱氏光源(低电流交流电弧)作高速钢的光谱分析时,发现样品的组织结构对于分析结果有影响。为了对这个现象得到进一步的了解,我们选择了10种含碳量不同的铬钢进行热处理试验和光谱分析。一系列实验的结果指出,用小电流(5安)电弧光源时,铬的光谱分析结果由于试样是退火组织或淬火组织而有差别,这个差别又随着钢中含碳量的增加而增加。我们认为,这种影响是由于碳在试样中存在状态的不同所引起的。在低功率光源中,这种不同使合金元素被蒸发和被激发的情况有所差别,因而就影响了光谱分析的结果。这种影响由于合金元素之不同而有程度上的不同,对铬的影响很显著,对锰和矽的影响则很小。此外,所选择的分析线对是弧线还是火花线,对于这种组织结构的效应也有显著的影响。 曾经进行了一些消除组织结构影响的实验。发现在应用低功率光源时,增加预燃时间并不能消除这个效应。用火花光源或大电流(8安)电弧光源时,这种影响大为减小。

Here is discussed the application of differential gear mechanism for variable speed control, particularly for varying bobbin speed of flyer frames. For all three types as shown in Fig. 1, we get the same speed relationship as follows: n_z=bn_o+(1-b)n_y n_o-Constant speed of main shaft. n_y-Control speed from some speed-varying mechanism such as friction disk or belt cone. n_z-Output varying speed for some definite ends. b-Numerical constant dependent on gear ratios, given in Tab. 3 for all the three different...

Here is discussed the application of differential gear mechanism for variable speed control, particularly for varying bobbin speed of flyer frames. For all three types as shown in Fig. 1, we get the same speed relationship as follows: n_z=bn_o+(1-b)n_y n_o-Constant speed of main shaft. n_y-Control speed from some speed-varying mechanism such as friction disk or belt cone. n_z-Output varying speed for some definite ends. b-Numerical constant dependent on gear ratios, given in Tab. 3 for all the three different types. Straight lines are plotted as in Fig. 2 to show the above relationship for different values of b. In Fig. 3 is given the relationship of turning moments and turning speeds at different values of b. In Fig. 4 is given the directional relationship of the mechanical power trans. mitred in the differential gear mechanism. The conclusion is: When the required speed variation is within narrow limits, the use of differential mechanism can reduce the mechanical power transmitted by the speed-varying mechanism, thus increasing its sensitivity and accuracy of control. See equation (12).

本文讨论粗纱机差动机构中周转轮系的应用——变速控制。对于图1中三种类型的周转轮系,可以得出统一的转速关系式: n_z=bn_o+(1-b)n_y 在图2中根据上式按下同的b值作出各直线以表示其间的关系。在图3中按不同的b值作出转矩和转速之间的关系图。在图4中表示出在各种情况下周转轮系和变速装置间的功率路线图。根据(12)式我们可以得出这祥的结论:当所要求的变速范围不大时,采用了周转轮系可以使通过交速装置的功率大为减小,因而增加变速控制的灵活性和准确性。

 
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