查询词典 anode rays

Its main products include: medical X ray tubes, image intensifier tubes and rotating anode X ray tubes etc., which are all in conformity with the national standards and registered with the "Yuan Xing" trade mark.

主要产品有：医用X射线管、影像增强管、下球管等，均执行国家技术标准，以&元星牌&为注册商标。

In the first decade of the new century, Lee de Forest inserted a grid in the tube between the anode and cathode.

在新世纪的第一个十年，Lee de Forest往电子管的阳极和阴极之间插入一层栅格。

The main research work of this dissertation is as follows: Based on the chemical reaction engineering theory and the nitrobenzene electroreduction mechanism, the plate and frame electrolyzer was designed and applied to the process of electroreduction nitrobenzene to p-aminophenol. This dissertation measured the residence time distribution data of the electrolyzer by means of the pulse response method and studied the rule of flow pattern along with the current capacity change. Under different conditions ,this dissertation studied the cyclic voltammetry properties of nitrobenzene on different electrodes by means of the dynamic cyclic voltammetry method and the electrode materials applied to the NB electroreduction have been selected primarily.Baseed on the results of cyclic voltammetry tests, this dissertation used p-electrode systems to measure the steady-state- polarization curves of nitrobenzene on different electrodes in H-type diaphragm cell, and obtained each primary factor s influence rule and the exchange current density value of each electrode.And then on the basis of the conclusions of fundamental researchs upword, the effects of influence factors on the the yield of p-aminophenol and the current efficiency,such as electrode material, current density, quantity of electricity circulated, nitrobenzene concentration . sulpuric acid concentration and so on, have been studied in detail in the systems of hign temperature , strong acidity and oxygen-poorthrough a series of electrolysis experiments in this paper.After all using Pb as anode Monel metal as cathode Dupont Nafion 417 cation-exchange membrane as membrane, this dissertation obtained the optimum technological condition: reaction temperature about 85C, current density 500A m-2, sulphuric acid concentration 20%wt.

论文的主要研究工作为：运用化学反应工程理论，结合硝基苯的电还原机理，设计出用于硝基苯直接电还原合成对氨基苯酚实验的板框式电解槽，并利用脉冲响应法测定了该板框式电解槽的停留时间分布数据，研究了流型随流量变化的规律；通过动态循环伏安法研究了硝基苯在不同电极上、不同条件下的循环伏安特性，初步评选出了用于硝基苯电还原的电极材料；结合循环伏安的测定结果，在H型隔膜电解槽中采用三电极体系测定了硝基苯在不同电极上、不同条件下的稳态极化曲线，得到了各主要因素的影响规律及硝基苯在各个电极上电还原的交换电流密度数值；在基础研究结论指导下，采用板框式电解槽，在高温、强酸、贫氧系统中，进行了一系列的电解实验，分别考察了电极材料、电流密度、通电量、硝基苯浓度、硫酸浓度等因素对收率及电流效率的影响，最终选择以蒙乃尔合金电极作为阴极、铅合金为阳极、Dupont Nofion 417阳离子交换膜为隔膜，得到由硝基苯直接电还原制对氨基苯酚的最佳电解工艺条件：反应温度85℃，电流密度500A·m~(-2)，硫酸浓度20％wt。

The former consists of LaBe crystal cathode, Wehnelt grid and an accelerating anode, and the latter is comprised of two equal radius concentrating cylinder electrodes.Its well known that the x-ray radiation emitted by electron-beams acting on metal target surface has well developed for about 100 years.

LaB_6电子枪发射的电子束经过静电聚焦系统，被会聚为微米级的电子束斑，该微束斑电子束与固体金属靶相互作用，产生出微束斑的X射线，从而形成微束斑X射线源。

The next thing he found out was that if he put his hand between the rays and a photographic plate, the rayswould print a shadow of the bony framework of his hand on the plate.

他发现的第二件事情是假如他将手放在射线和感光板之间，射线会在板上印出手骨胳结构的影子。

The tool has the features of modular design and recording only high energy gamma rays from activated oxygen. Its measurement rating and accuracy are 10～600 m 3/d and 10%.

仪器具有模块化设计及探头仅测量氧活化伽马射线的特点，流量测量范围和精度是 10m3 /d～ 6 0 0m3 /d和± 10 %。

Seeds of Ailanthus altissima Swingle were treated with 60Co γ-rays at the doses of 0, 30, 50, 75, 100, 150 and 200Gy, the effects of irradiation on seed germination and seedling growth were studied. The results showed that irradiation inhibited germination, and decreased the survival rate and the growth of plants.

以椿树种子为材料，用60Coγ射线进行了0、30、50、75、100、150和200Gy辐照处理，研究辐照对椿树种子发芽及幼苗生长的影响，以期获得耐盐突变体。

NCS through seals the tunnel and the air corridor is connecting the global 28 big cities regions, more than 10 billion people in the world live in concentrated communities of these cities region, outside the cities region are ruins attacked by nuclear pollution and cosmic rays, according to the declaration

"新中方"还通过密封隧道和空中走廊串联著全球二十八个大城市区域，十多亿人便聚居在这些城市区域里，城市区域外是受高度到核污染和宇宙射线侵袭的废墟，据联合政府的调查报告宣称，它们已不适合任何生命的居住和繁衍，是死亡之地。

If the observer is at a great distance compared to the other dimensions of the experiment and the rays are nearly perpendicular to the reflecting surfaces, then the path difference between the two waves (corresponding to r1-r2 in the preceding section) is just twice the thickness d of the air wedge at each point.

如果观察者比起实验装置来讲距离较远而且光线较接近于垂直反射于表面，那么这两光波的光程差(在前面所述的相应部分 r1-r2)就仅仅是空气劈尖在该点处的厚度 d 的两倍。

The observer is at a great distance compared to the other dimensions of the experiment and the rays are nearly perpendicular to the reflecting surfaces, then the path difference between the two waves (corresponding to r1-r2 in the preceding section) is just twice the thickness d of the air wedge at each point.

如果观察者比起实验装置来讲距离较远而且光线较接近于垂直反射于表面，那么这两光波的光程差(在前面所述的相应部分 r1-r2)就仅仅是空气劈尖在该点处的厚度 d 的两倍。

Effective local search tactics reaches local searchers when they are ready to buy - with every way that it is possible for them to buy from you.

有效的地方搜索策略达到当地的搜索，当他们准备购买-以各种方式，这是他们有可能从您那里进行购买。

The first two are periodic sentences for their beginnings; and the fifth and the last are also periodic sentences each for the embedding of a parenthetic structure.

1960年代中后期，当战后女权主义和当时的许多其他抗议运动在西欧和北美发展成某种势力时，性别的概念演绎成补充和延伸生物性别差异的概念。