Secondly, It states the package process of White LED in detail and discusses the following aspects: One aspect is the coating method of phosphor, which influences the LED's color temperature and range of available color properties, so,phosphor coating in manufacturing process must be uniform in thickness.

接著根據(jù)白光LED所存在的問題超碰操人妻网，對(duì)白光LED的封裝工藝和原材料的選擇搭配進(jìn)行改進(jìn)91午夜在线视频，在本文中白光LED有兩種封裝方式外国二级黄色二级黄色视频外国，一種是支架式封裝形式黄色网站操一操，一種是大功率LED的封裝形式。

Firstly, electrization knowledge related to the research is introduced. After a deep study on various contact loss detection techniques, especially on the electric arcs detection techniques, we draw the conclusion that the untouched detection technique based on phototube sensor can acquire exact contact loss information, and will to be the leading technique for contact loss measurement in future. Secondly, combining with the special railways system in our country, we analyze the cause of the arcs, and the influence on the power supply system and the on board traction drive due to the arcs in detail, and study the arcs' spectrum characteristic. We also analyze detecting principles and put forward with a method - using phototube sensor to detect the contact loss arcs, conceive the configurations and detection flows of the measurement.

文章通過(guò)對(duì)電氣化鐵道相關(guān)知識(shí)的了解及對(duì)國(guó)內(nèi)外離線檢測(cè)技術(shù)的深入了解人人摸曰曰操，尤其是對(duì)離線電弧檢測(cè)技術(shù)的了解一级女人自慰毛片三十分钟，總結(jié)出了基于光電傳感器的非接觸離線電弧檢測(cè)系統(tǒng)能夠得到準(zhǔn)確的弓網(wǎng)離線情況，并且是國(guó)內(nèi)外檢測(cè)技術(shù)的發(fā)展方向看黄的地址；文章詳細(xì)的分析了離線電弧產(chǎn)生的原因免费看的国产区视频，電弧對(duì)機(jī)車牽引動(dòng)力的影響情況麻豆精品三级视频在线播放，研究了我國(guó)鐵路系統(tǒng)中離線電弧的光譜特征分布午夜电影网理论片；分析了系統(tǒng)的檢測(cè)原理，提出了采用光電傳感器實(shí)現(xiàn)對(duì)離線電弧進(jìn)行檢測(cè)的方法动漫啪啪高潮喷水呻吟无遮挡，并設(shè)計(jì)了"電力機(jī)車弓網(wǎng)離線電弧檢測(cè)裝置"的檢測(cè)功能和管理功能91日韩无码视频，規(guī)劃了系統(tǒng)的組成結(jié)構(gòu)及檢測(cè)流程。

The applications of chromosome numbers and basic numbers in pteridophyte systematics are reviewed in detail. The significance of karyotype analysis, polyploidy, pogamy, and reticulate evolution in pteridophytic classification, evolution, and phytogeography is also reviewed.

文中論述了蕨類植物染色體數(shù)目和染色體基數(shù)在系統(tǒng)學(xué)上的應(yīng)用以及蕨類植物染色體組型分析狠狠ⅴ日韩v欧美v天堂、多倍化国产一级a爱看片免费、無(wú)融合生殖、多倍體復(fù)合體及網(wǎng)狀進(jìn)化的研究概況国产永久免费A片。

In this paper, the analytical expressions of seismic input for homogeneous elastic half-space are first derived in oblique incidence of plane SV-wave, and then a finite element model for a real hydropower cavern group composed of main powerhouse- transformer chamber- tailrace surge tank cavern is created. Characteristics of seismic responses such as displacement, acceleration and stress are studied in detail at different incidence angles and some results are compared with those given by the literature.

本文首先推導(dǎo)了平面SV波斜入射下均質(zhì)彈性半無(wú)限空間的地震動(dòng)輸入表達(dá)式又色又爽又黄的视频大全欧美，然后建立了某水電站主廠房室-主變室-尾水調(diào)壓室等構(gòu)成的地下洞室群有限元模型，詳細(xì)研究了不同入射角度下各洞室的位移18禁美女黄网站色大片免费观看、加速度一级无码免费毛片、動(dòng)應(yīng)力等地震反應(yīng)特點(diǎn)，并與文獻(xiàn)進(jìn)行了對(duì)比jizz日韩。

Based on the Markov chain, the transitive law of the plastid in the splitting process of the cell in biology was first studied and then the pure composition probability of the cell was discussed in detail, including the deletion plastids and the transformation between the different states of the cell.

以隨機(jī)過(guò)程為研究工具研究了生物學(xué)中質(zhì)體隨細(xì)胞分裂而傳遞的規(guī)律青草h在线视频播放，通過(guò)數(shù)學(xué)建模對(duì)含突變質(zhì)體的雜合細(xì)胞的純合概率和細(xì)胞的不同狀態(tài)之間的轉(zhuǎn)移在生物學(xué)意義上進(jìn)行了詳細(xì)的討論。

In order to disclose destroy mechanism of the slab, and apply plunge pool widely, it is necessary to research vibration characteristics of slab set in the inverted plunge pool in detail.

為了揭示反拱水墊塘底板破壞機(jī)理亚洲国产精品国揄产拍，推廣反拱水墊塘消能工的應(yīng)用你懂的在线手机，對(duì)反拱水墊塘拱圈底板塊的振動(dòng)特性進(jìn)行了詳細(xì)地研究。

In this thesis the law of the forming of nitrite in the process of pickling of potherb mustard had been studied in detail.

試驗(yàn)詳細(xì)研究了雪里蕻腌制過(guò)程中亞硝酸鹽的形成規(guī)律美女黄色视频的久草视频，通過(guò)試驗(yàn)找出了亞硝酸鹽的形成與雪里蕻腌漬液的食鹽濃度免费看午夜福利在线观看、溫度、酸度、含糖量及雜菌污染的關(guān)系又黄又刺激又黄又刺激又免费网站，為在生產(chǎn)中有效降低腌制雪里蕻產(chǎn)品中亞硝酸的含量提供了理論依

To counter the problems present in the CO 2 removal with PC method in the little scale ammonia synthesis plant at present, the effect of CO 2 removal plant with carbonic propenyl ester method on the different factors of normal production has been analysed in detail.

針對(duì)目前小合成氨廠碳丙脫碳存在的問題欧美精品又粗又大，詳細(xì)分析了影響碳丙脫碳裝置正常生產(chǎn)的因素，總結(jié)了 90年代以來(lái)人們?cè)诮鉀Q生產(chǎn)實(shí)踐中諸多問題的經(jīng)驗(yàn)和方法射射网址，對(duì)碳丙脫碳工藝作了總結(jié)與評(píng)述日韩欧美国产视频图片在线。

Catalysts in three synthesis routes,the hydroxylation of 4-tert-butyl-phenol,the alkylation of pyrocatechol by tert-butyl alcohol and the alkylation of pyrocatechol by isobutene,were discussed in detail in terms of reaction conditions,catalysts,temperature,reaction time etc.

論述了對(duì)叔丁基苯酚羥基化法、鄰苯二酚與叔丁醇烷基化法和鄰苯二酚與異丁烯烷基化法生產(chǎn)對(duì)叔丁基鄰苯二酚的合成路線的催化劑女同一区二区毛片。

In the third chapter, we put forward a quadruped robotic architecture in home healthcare system, and discuss the function and meaning of each model in detail.

第三章提出了家庭醫(yī)護(hù)四足機(jī)器人的控制體系結(jié)構(gòu)久久精品金8天国，并詳細(xì)論述了體系結(jié)構(gòu)中各模塊的功能、內(nèi)涵国产www黄。