四极的

Another approach in enhancing the light extraction efficiency of AlGaInP LED was accomplished using a surface roughening process. In this process, the Au(170 nm)/AuBe(260 nm)/Au(170 nm) ohmic contact layers were first deposited on the GaP window layer. After the alloy annealing process (480°C for 10 min), the Be atoms will diffuse into the GaP top layer and form non-uniform clusters. The LED samples were then immersed into a mixture 3H3PO4:1H2O2:1H2O solution for 6 min, resulting in a rough GaP surface. The luminous intensity of the AlGaInP LED can increase from 42 to 50 mcd, that is, an 18% enhancement can be achieved via the present non-photolithography surface roughening process.Keywords: LED, AlGaInP, Cu substrate, Reflector, Surface roughening

在实验的第二部份是开发磷化镓窗口层之粗化制程，我们是藉由正面金/铍欧姆接触电极之熔合制程，使铍扩散至磷化镓层，同时利用铍渗入磷化镓造成之特殊组成，可形成不均匀之蚀刻阻挡，而在磷化镓表面形成粗化，我们发现480℃、10分钟的熔合制程，加上浸泡磷化镓蚀刻溶液6分钟，可将四元发光二极体之发光亮度由42 mcd 提升到50 mcd，经由此无光罩粗化制程可将亮度提升18%，明显提升磷化铝铟镓发光二极体之外部量子效率。

The properties of four factorized chi-square forms, which are used in minimization of correlated data, are studied, including their biasness and unbiasedness.

研究了关联实验数据的四种因子化形式的χ2 表达式及其极小化性质，同时讨论了极小化估计值的有偏性与无偏性。

Mystic Topaz Promise Rings - 14 kt Yellow Gold Diamond and Heart Shaped Mystic Topaz Promise Ring 0.005 cts.

神秘的黄玉无极环-一十四克拉黄金钻石和神秘的心形环黄玉无极0 。005克拉。

Through the survey we found that the characteristics of courtesy appellation in middle ancient times are: first, two-syllable words developed rapidly;second,with regard to the word construction,the endocentric construction was the main method,the complement one took the second place and very few other ways, and some morphemes that mean honorific or modest came into being;third,a lot of special honorific titles but extensive honorific titles absent; fourth,many nones honorific-indicated often added to surnames or names ; fifth, some monosyllabic honorific titles to the second person pronoun were the trends of transformation .

通过调查我们发现中古时期谦敬称谓的特点是：一、双音节词迅猛发展；二、构词方式以偏正式为主，附加式次之，其他方式很少，且出现了一些构词能力极强的表敬和表谦语素；三、专用尊称极多但泛尊称缺位；四、有不少表敬名词常常添加在姓氏名字之后；五、部分单音节表敬称谓词有向第二人称代词转化的趋势。

In this experiment, eight heat tolerance cucumber cultivars were selected: Yinxing, Japan cunlu, Japan jizao number3, Xiaqing number4, 631-1, 315, Jinyan number4, bailvjie. 631-1 showed high heat tolerance in all stages.Postgraduate: Meng LingboMajor: Olericulture Supervisor: Prof .Qin Zhiwei

本试验筛选出8个黄瓜耐热品种，即：银星、日本春绿、极早三号、夏青四号、631—1、315、津研四号、白绿节，其中631-1在各生育期都表现出很强的耐热性。

The extreme pressure performance of sodium tetraborate and potassium tetraborate were studied by cooperating with inorganic salts in aqueous solution,and the wear scar's surfaces were analyzed by SEM and EDX.

以四硼酸钠和四硼酸钾为主要对象，研究了硼酸盐与无机盐复配后在水介质中的极压性能变化规律，并用扫描电镜和X射线能谱分析了磨斑表面形貌和元素组成。

The results showed that: at metaphase I, the homoeologous chromosome pairing among different F1 hybrids ranged from 2.0 to 11.4 bi-valents formed by homoeologous chromosomes per pollen mother cell, and very few multivalents, and even very few bivalents were formed by two chromosomes within one genome rather than homoeologous chromosomes in some PMCs; at anaphase I, all biva-lents were disjoined and most univalents were divided.

结果表明在中期I阶段，这些杂种一代的近缘染色体联会变化很大，每个花粉母细胞中二价体形成的数目从平均2个到11.4个不等，甚至在某些花粉母细胞中，还发现极少的多价体和非部分同源染色体所形成的单基因组内二价体；在后期I时，所有的二价体分离，同时多数单价体也分离，分离的二价体和分离的单价体都移向两极，从而形成两组染色体；因为这时完整花粉母细胞中分离的二价体在两组染色体中总是对应出现，从而根据半二价体上染色体重组的位置可以分析在二价体的四分体时期发生在非姊妹染色体之间的多种染色体交换类型，如单交换、三线双交换、四线双交换、四线三交换和四线多交换。

A four-ball tester was used to evaluate the load carrying and antiwear properties of bismuth dibutyldithiocarbamate,bis-dibutyldithiocarbamates(V7723),sulfurized isobutylene,molybdenum ester non sulfur and phosphorus in a mineral oil respectively and their synergistic effects.

利用四球试验机评价了二丁基二硫代氨基甲酸铋与二丁基二硫代氨基甲酸酯(V7723)、硫化异丁烯和非硫磷钼酸酯添加剂的极压和抗磨性能，以及它们之间的极压和抗磨协同作用。

In chapter 4 and 5, we have applied the high density ITO nanorods on GaN/InGaN sapphire-based LEDs and Vertical-Injection LEDs, respectively.

而在论文的第四章第五章，我们将高密度分布的氧化铟锡奈米柱薄膜应用在氮化镓蓝宝石基板型发光二极体和垂直注入型发光二极体上。

We live in the fourth, when four buildings is a very few, like the farms, the wind of rice flower Mai flowers, she would have been shot in our nose.

我们住在四层，那时四层是楼房的一个极数，叹为观止了似的，风吹着稻花麦花儿，香气也能一直扑到我们鼻子里。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。