屏极

A Study on Fraunhofer Double-Slit Diffraction by Applying Simulation Technology;2. Based on Kirchhoffs theory,the approximate intensity formulas of double-slit diffraction of Gaussian Beam is derived under paraxial approximation with power series expansion methods.

依据基尔霍夫衍射理论，利用幂级数展开的方法推导出旁轴条件下高斯光束双缝衍射的近似光强计算公式，并通过数值计算对双缝衍射的基本特性进行了讨论，得出了与其他文献一致的结论，得出了高斯光束下的双缝衍射极小值点比平行光束双缝衍射的极小值点向外移，观察屏中心光能变小；光强分布可由激光斑在衍射屏处的参数调制的结论。

He then halved the primary winding, using one-half in the plate circuit and the other half in the cathode circuit.

然后他把初级绕组分成两半，半臂用在屏极电路，另半臂用在阴极线路。

There may be secondary emission effects that depend on theplate material.

而且还有屏极材料不同导致的二次发射现象。

The theory is that electron launched by electron gun is inducted into discharge chamber with screen voltage attracting, gas will be charged by inputting RF power. Ion can be attracted by screen and accerlate voltage.

射频宽束离子源工作原理是利用电子发生器产生电子，在屏极电压作用下把电子引入离化室，利用射频感应原理将能量耦合到离化室，再利用气体放电原理产生等离子体，在屏极和加速极的作用下引出离子束。

I used a Bogen T725 transformer as a way to match the plate of the tube to my headphones.

我用了一个Bogen T725变压器进行屏极回路与我的耳机间的阻抗匹配。

A tuned circuit in the plate is used to peak response, maximizing output and helping to suppress harmonics.

屏极所接的调谐回路作为发射配谐，使发射达到最大并能抑制谐波。

Half remains in the plate circuit while the other half is placed between the cathodes with consideration given to polarities.

一半的初级绕组保留在屏极线路而另一半则安置在阴极之间，但阴极间的半初级绕组需要考虑极性。

This still enabled each half cycle to complete its loop through the one-half of primary in the plate circuit and one-half in the cathode circuit.

这样每半周的回路是完整的，一半的初级在屏极线路上，另一半在阴极线路上。

Consider an R-C coupling mechanism from plate of one stage to grid of the next stage. What is the frequency response?

让我们考虑一下从一个放大级的屏极到下一个放大级的栅极的 RC 耦合，它的频响会是怎么样的呢？

However, his arrangement has the limitation that it can be used only with equal plate and screen supply voltages.

然而，他的设计还是有限制的，它只能在屏极和廉栅极电源高压相等的条件下才能使用。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。