primary electron 中文意思是什麼
primary electron
解釋
初級電子-
When primary electrons hit the surface of the chunnel, secondary electrons are generated, which make the electron distribution at the exit hole of the chunnel more uniform
當初始電子碰撞絕緣壁時，會產生二次電子，而二次電子能改善電子在通道出口處的電子能量分佈的均勻性。 -
" bor " the series product, uses now the international leading technology, american, german, the japanese import name brand electron primary device, the raw material production manufacture, at present has several series, 100 many kinds of specifications, the variety complete standardization series product, as well as the large - scale non - sign using plc, touches the screen and the labor controls the completely automatic ultrasonic wave clearer, the ultrasonic wave plastic welding apparatus which the computer control screen demonstrated, industry cold water machine, the commercially pure hydraulic engine and so on the non - sign equipment
「博爾」系列產品，採用當今國際領先技術，美國德國日本進口名牌電子元器件原材料生產製造，目前有十幾個系列一百多種規格品種全的標準化系列產品，以及大型非標運用plc觸摸屏及工控電腦控制屏幕顯示的全自動超聲波清洗機超聲波塑料焊接機工業冷水機工業純水機等非標設備。 -
This project which is based on the demand of increasing the electron tube ’ s qualities totally and reducing the manufacture cost has done a large amount of investigative work as follows to improve and perfect the technologies for the important part of electron tube manufacture ? the grid surface processing : on the surface processing of the molybdenum grid, the primary purpose is to reduce thermionic emission and secondary electronic emission of the grid. by the constantly experiment and grabbling the different technology routes, we have successfully developed these new technologies on the tac and zrc electrophoresis and electroplating platinum black of the grid, and made its surface cladding quality very stable and reliable
本課題是基於整體提高電子管的質量和降低生產成本的要求，對電子管生產中的重要部分? ?柵極的表面處理技術進行改進和完善，主要在以下方面進行了深入研究:在鉬柵極表面處理方面，主要為實現降低柵極的熱電子發射和二次電子發射，通過不同工藝路線的不斷試驗和摸索，成功開發出柵極電泳tac 、 zrc和電鍍鉑黑的新工藝，使柵極的塗覆質量穩定可靠。 -
The secondary electron effect is incorporated into the simulation, which are divided into true secondary and reflected primary electrons
分析了次級電子發射的特性，在模擬中將次級電子近似分為真實次級電子和反射的原電子分別處理。 -
1 lanthanide hydrides ( m = la, nd, sm, dy and yb ) can be prepared easily by the direct hydrogenation of lanthanide metals catalyzed by ticl4 in tetrahydrofunan ( thf ) under normal pressure. the rate of hydrogenation decreased with increasing atomic number of lanthanides. transmission electron micrographs showed that the resulted lanthanide hydrides were in the form of nanoparticles with an average primary particle size around 20 - 40 nm
本論文首次提出一種在溫和條件下催化合成納米尺寸的鑭系金屬氫化物的方法，介紹在常溫常壓下，鑭、釹、釤、鏑、鐿五種鑭系金屬在四氫呋喃（ thf ）溶劑中，催化劑作用下與氫氣直接化合形成相應的納米尺寸的鑭系金屬氫化物。 -
Based on the comparison and analysis of the secondary electron emission coefficient of two kinds of emitter gaas in theory, it is concluded that when primary electron energy is lower the deviation of secondary electron emission coefficient of two kinds of emitter gaas will become smaller, while when primary electron energy is higher the deviation will increase
通過對兩種負電子親和勢二次電子發射材料的二次電子發射系數的理論值進行比較和分析，得出：當原電子入射能量較低時，兩種材料的二次電子發射系數差值較小；當原電子入射能量較高時，兩種材料的二次電子發射系數差值較大，而且隨著原電子入射能量的升高，兩種材料的二次電子發射系數差值也在增大。 -
The main work and conclusion for this paper is as following : according to the flashover test results of several kinds of iced insulators under positive voltage and negative voltage, this paper obtained : for the single porcelain insulator, the single glass insulator and the composite insulator bridged completely by icicle, the metal cathode ' s strong ability of emission electron is the primary reason that results in the lower negative flashover voltage ; the position difference of the high resistance district in method anode side results in that porcelain insulator cluster and glass insulator cluster have an evident effect of polarity ; when less ice and no icicle at the brim of the sheds, due to numerous non - polar arcs on the composite surface, the effects of polarity of composite insulator was lost using the test method of the average flashover voltage in the freezing period, dc flashover performances were investigated of several insulators with some typical structures and different material
本文的主要工作和結論如下：在人工氣候室內，根據不同覆冰絕緣子正、負極性下的閃絡試驗結果，得出負極性電弧金屬陰極的強電子發射能力造成了單片瓷、玻璃絕緣子及被冰凌橋接的合成絕緣子有較低負極性冰閃電壓；正極性電弧金屬陽極側產生高電阻區所處位置的差異使得瓷和玻璃絕緣子串具有明顯的極性效應；覆冰較少時，合成絕緣子表面出現數量較多的非極性電弧使合成絕緣子無極性效應。利用覆冰期內平均閃絡電壓的試驗方法，對不同材質和結構的絕緣子在覆冰、低氣壓和污穢共存環境中的直流閃絡特性進行了研究。試驗結果表明，直流平均閃絡電壓隨著海拔的升高、覆冰量的增加以及污穢度的增加而降低，且其特徵指數與絕緣子結構、覆冰量、覆冰狀態、污穢度等有關。 -
The trajectory of electron, the electronic energy, emittance and the bunch length in the accelerating process are presented. primary properties parameters are obtained on different positions
雖然第一加速段之前的漂移距離較長，但縮短該漂移段距離的模擬表明對提高束流性能的作用不大。 -
3. to investigate hb - liposome ' s photodynamic effect on port wine stain ( pws ) and to work out a primary clinical regime by using leghorn cock comb as a model through macroscopic, light - microscopic and electron - microscopic observations and 4
以來亨雞雞冠為實驗動物模型，進行竹紅菌乙素?脂質體（ hb - liposome ）的光動力療效觀察，研究給藥及照光方案，初步確定治療方案。 -
Transmission electron micrographs showed that the resulted lanthanide were in the form of nanoparticles with an average primary particle size around 20 - 40 nm
Tem測試結果表明真空條件下（ 13 - 40pa ） ，熱分解制得的活性金屬粉末的顆粒大小為20 - 40nm ，分散度好且純度高。 -
The primary investigation was carried out using mechanical polishing equipment. the diamond films after polishing were observed by means of scanning electron microscope. the machining process and the factors which influence the polishing efficiency and quality were preliminary discussed
開展了金剛石膜的機械拋光研究，使用自製的研磨裝置對金剛石膜進行精拋光加工，分析拋光速度等工藝參數對加工效果和效率的影響，並通過sem等手段分析了微觀形貌和拋光機理。 -
Marc 145 cells were suitable for primary isolation and propagation of avian rotavirus. trypsin appeared essential for the enhancement of infectivity and the occurance of cytopathic effect ( cpe ). serum neutralization ( sn ) n electron microscopy ( em ) and analysis of genomic rna were done to identify and confirm the identity of rotavirus
根據病毒形態、基因組的聚丙烯酰胺凝膠電泳、病毒中和試驗、動物回歸試驗，對分離的病毒進行了鑒定，並對分離病毒的生物學特性和理化特性作了部分研究。
分享友人