In this thesis, the study results of the basic characteristics of laser-ablation Cu plasma are given, Following are the details, The research of laser induced Cu plasma emission spectra in airUsing Nd:YAG laser (with a wavelength of 1064nm and a pulse width of 10ns) ablate copper target in air to observe the emission spectra of plasma.

本論文采用光譜方法對(duì)激光燒蝕產(chǎn)生的Cu等離子體的基本特征進(jìn)行了實(shí)驗(yàn)研究日韩欧美中文国产，主要內(nèi)容有：空氣中激光燒蝕Cu產(chǎn)生等離子體發(fā)射光譜的研究利用Q-開(kāi)關(guān)Nd∶YAG激光器產(chǎn)生的1.06μm、10ns的脈沖激光聚焦在空氣中的Cu靶上哪个网站有偷拍视频，觀測(cè)了激光誘導(dǎo)的Cu等離子體發(fā)射光譜亚洲狂插。

The radial plasma transport in the Saturn's magnetosphere is that the denser plasma becomes cooler because of adiabatic expansion in the process of outward transport while the injected lighter plasma becomes hotter due to the adiabatic compression.

密度大的等離子體在向外輸運(yùn)過(guò)程中會(huì)絕熱膨脹而溫度降低，密度小的等離子體則在注入磁層過(guò)程中因?yàn)榻^熱壓縮而溫度升高91精品国产无水印在线观看。

Thus, it is important and significant to study plasma ignition technology and direct the structure design and application of plasma ignition device. In this dissertation, the plasma ignition technology and development of numerical simulation was introduced and the structure and character of chemical flow of plasma ignitor was analyzed in details.

本文詳細(xì)介紹了等離子點(diǎn)火技術(shù)國(guó)內(nèi)外研究現(xiàn)狀和燃燒流場(chǎng)的數(shù)值模擬進(jìn)展a级毛片200禁在线观看，系統(tǒng)深入地分析了等離子點(diǎn)火器內(nèi)部化學(xué)反應(yīng)模型、流場(chǎng)數(shù)理模型和數(shù)值模擬方法精品黄色福利x。

The third, since the electrons in the plasma are accelerated and ions move together, some harmful effects are also observed, such as both output powers of RBWO and FEL decrease versus the increase of plasma density. The results agree with the results of linear fluid model. In the unmagnetized plasma-loaded RBWO-FEL, output powers of pump source and FEL are obtained only in a narrow plasma density range and both have maximum. The results of simulation are in good agreement with the experimental results.

模擬分析了磁化等離子體填充的RBWO-FEL人人草人人插，盡管沒(méi)有發(fā)現(xiàn)等離子體填充后RBWO及FEL輸出功率的成倍增長(zhǎng)，但是觀察到等離子體的引入對(duì)RBWO-FEL產(chǎn)生以下影響：泵波及FEL的輻射頻率的線寬得到明顯增加查询黄色网站；在較高的等離子體密度下欧美激情综合在线三区，TM〓模將會(huì)被完全抑制；首次觀察到T-G模振蕩及功率輸出97超碰在线频，結(jié)果同線性理論計(jì)算結(jié)果基本一致黄色美女福利视频；等離子體中的電子被加速及背景離子的移動(dòng)將對(duì)器件工作產(chǎn)生不利影響。

Simulative results show that the electron beam can be transported in the unmagnetized plasma-filled for two reasons. The first, the plasma neutralizes the majority of the space charge forces within the beam. The second, radial electric field generated by electron beam interaction with the plasma leads the beam to converge along axis. By PIC simulation, we find that atomic mass of the background ion effects on the Characteristics of the plasma-filled devices.

非磁化等離子體填充的RBWO-FEL的模擬表明只有在一較窄的背景等離子體密度范圍內(nèi)久久夜晚黄色视频，電子注才能良好傳輸亚洲精品一二三区尤物tv，產(chǎn)生泵波及激光功率輸出，并都存在有峰值功率點(diǎn)色8久久人人97超碰香蕉987，同實(shí)驗(yàn)觀測(cè)到的結(jié)果完全吻合av黄色电影免费日韩；該范圍內(nèi)，電子注的傳輸是由于背景離子中和了注中徑向發(fā)散空間電荷力及注在等離子體中產(chǎn)生的徑向的電場(chǎng)使注在軸向匯聚欧洲欧美精品VA在线观看。

Plasma modification is consisted of Ar-H2 plasma etching and Ar-H2-CH4 plasma decarburizing, experiments have been done on direct current plasma spraying CVD device.

等離子改性處理工藝包括Ar-H_2等離子體刻蝕脫碳国产伦精品一区二区三区娃女、Ar-H_2-CH_4等離子體滲碳處理，實(shí)驗(yàn)在直流等離子體射流CVD裝置上進(jìn)行涩涩涩视频在线。

China had initially formed a preservation system for germ plasma resources from crops, including one national germ plasma bank for long-term preservation and a duplicate one, 23 local germ plasma banks for mid-term preservation, and 25 national germ plasma nurseries, of which two are for test-tube culture.

到1995年底劲爆国产一区在线，中國(guó)已初步形成農(nóng)作物種質(zhì)資源保存體系，建成國(guó)家級(jí)貯存種子長(zhǎng)期庫(kù)及復(fù)份庫(kù)各1座欧洲特级黄色网站，地方中期庫(kù)23座人人操人人干人人插久久，國(guó)家級(jí)田間種質(zhì)圃25個(gè)欧美一级片手机免费观看，其中試管苗圃種質(zhì)庫(kù)2個(gè)。

The research on coking during the pyrolysis of coal to acetylene in the plasma (1) In the arc plasma jet, different kind of coal has different coking character. The aromatics, colloids, asphaltene and Carbenes are the precursors of the cokes.(2) The mostly reasons of coking in the plasma reaction equipment are the particle size, the feeding velocity, the power of plasma and the structure of equipment.

五人妻无码久久精品人妻性色AV、煤等離子體熱解制乙炔裝置結(jié)焦性研究的結(jié)果(1)在電弧等離子體射流的條件下国产人A片视频在线播放，煤種的結(jié)焦能力不同，煤中的芳香分黄色精品视频一区二区、膠質(zhì)精品国产一级在线观看、瀝青質(zhì)和碳青質(zhì)是結(jié)焦前驅(qū)體。

The relationship between the laser plasma acoustic wave and laser plasma shock wave is also studied. A method to judge the mechanical effect of the laser plasma shockwave according to the character values of the laser plasma acoustic wave is got.

論文還分析研究了激光等離子體聲波和激光等離子體沖擊波力學(xué)效應(yīng)的關(guān)系91性爱视频在线观看，提出了利用激光等離子體聲波特征量判斷激光等離子體沖擊波力學(xué)效應(yīng)的方法国产一区在线视频。

The mathematical model of plasma arc jet velocity at the exit of orifice logically combines the structural sizes of orifice with the plasma gas flow rate, the temperature of plasma arc at the exit of orifice, intensity of ionization and the force of arc pinch effect, by which the velocity of plasma arc jet can be estimated.

當(dāng)噴嘴結(jié)構(gòu)參數(shù)，離子氣流量一定時(shí)欧美性爱香蕉视频，等離子弧在噴嘴出口處的溫度和電離度的增加能使射流的噴嘴出口速度顯著增加日韩精品视频久久久免费观看，而電磁壓縮力使射流的噴嘴出口速度增加得較少。