查询词典 directly heated cathode

We made aluminum and silver thin films as semi-transparent cathode. The transmittance of the semitransparent cathode was about 30%.

首先制备了ITO薄膜调节层，然后制备了半透明金属复合阴极，复合阴极对可见光的透射率为30％左右。

Ferroelectrics cathode is a high-density electron beam pulse source. It has many advantages when comparing with traditional thermionic cathode.

铁电阴极是一种强流的脉冲电子束源，同传统的热电子阴极相比具有许多独特的优点，因而在高能物理、电子学、真空微电子等领域有可能取代普通热阴极及场发射阴极。

Cathode vacuum arc discharge between the duct and the cathode is observed.

通过在90°磁过滤管道和阴极之间加一30～60V的正偏压使系统沉积速率得到了大幅度提高。

When magnetic filter duct is biased positively 30~60 V relative to the cathode of a MEVVA plasma source, cathodic vacuum arc discharge is generated between the duct and cathode.

在 90°磁过滤管道和MEVVA源阴极之间加一 30～ 60V的正偏压，可使磁过滤管道起到阴极弧放电第二阳极的作用。

The device comprises an arc discharge vacuum chamber; wherein, the arc discharge vacuum chamber is connected with a vacuum pump and is internally provided with a graphite cathode and a graphite anode which are connected with a DC supply. The device is characterized in that the graphite cathode and the graphite anode are respectively provided with an upper spherical crown shape graphite plate and a lower spherical crown shape graphite plate which are matched with each other and formed a spherical crown shape capacitor.

它包括电弧放电真空室，电弧放电真空室与真空泵相连接，电弧放电真空室内设有石墨阴极和石墨阳极，石墨阴极和石墨阳极与直流电源相连接，其特征在于在石墨阴极和石墨阳极上分别设相配合的上球冠形石墨板和下球冠形石墨板，上球冠形石墨板和下球冠形石墨板形成球冠型电容器。

According to the results of H. Vogt about the relationship between current density and cathode potential, the cathode current density of 3000A/m〓 is determined.

根据H.Vogt对电流密度和阴极电位关系的研究结果，选择电沉积铜的阴极电流密度为3000A／m〓。

A new wavemeter with cathode-ray for decimeter and centimeter waves is proposed, utilizing special deflections of cathode ray in a rapidly alternating field. When the wavelength of the deflecting field is short enough, the deflections can be made to have maximum and zero sensitivities or phase-shifts by adjusting the anode voltage.

著者新拟一量数分米或数厘米电波之波长计其法用阴极射线在极短波长之电场内之特殊偏侧在相当情形下，可由调节其阳极之电压，而使其偏侧之灵敏度或相差成极大或成零。

An RF ion source suitable for low power operation over a range of pressures in air which comprises discharge electrode, a cathode and an anode, the cathode being connected to an rf signal supply through an associated coupling means and the anode adapted to provide a surface area over which a plasma discharge may occur no greater than substantially that of the cathodal area over which the discharge may occur.

在空气压力范围内适合低功率工作的射频离子源，该离子源包含放电电极，一个阴极和一个阳极，该阴极通过相关的连接装置连接到射频信号源，调节该阳极以提供等离子放电可能发生的表面区域，该区域不大于放电可能发生的阴极区域。

In the paper, some factors influencing the effect of reduction including the anodic material, the cathodal material, the area ratio of cathode to anode and the kind of electrolyte have been investigated and screened out. The result showed that under the same reduction conditions, the reduction of Cr6+ has better effect to use lead-antimony alloy as anode, iron plate as cathode, which area ratio is 7:1 and potassium sulphate as electrolyte.

本文首先对影响电解还原效果的阳极材料、阴极材料、阴阳极面积比和支持电解质加入的种类等因素进行了研究筛选，结果表明：在同样电解还原条件下，实验中阳极采用铅-锑合金，阴极采用铁板，阴阳极面积比取7∶1，支持电解质取为硫酸钾时，具有较好的Cr~(6+)还原效果；同时在采用铅-锑合金作阳极的条件下，通过正交实验，对影响直接在碱性介质中电解还原低浓度含铬废水的其他因素进行了研究，即研究了在电化学还原过程中，Cr~(6+)的初始浓度、极板间距、支持电解质的加入量、搅拌情况等因素对还原效果的影响程度，确定出了主要的影响因素。

A catholyte reservoir (76) external to the cathode chamber supplies catholyte (40) to and removes gases (73) from the cathode chamber.

设置在阴极室外部的阴极电解液储存器（76）向阴极室供应阴极电解液（40）并从阴极室排出气体（73）。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。