控制键

CdSe nanoclusters were overcoated with CdS shell in aqueous medium, which resulted in elimination of deep defects on surface of nanoparticles and thus large increase of the emission intensity of CdSe nanoclusters.(4) Based on PL emission and excitation results and the theoretical calculation on fine structure of bandedge exciton, a model of formation of excimer within the small clusters was proposed to explain the large Stokes shift of luminescence from absorption edge observed in PL results.

有机包覆剂虽然可以控制颗粒的长大，但无法同时消除由Ⅱ族和Ⅵ族两种元素的悬挂键在表面形成的无辐射复合缺陷中心，本文实现了在水溶胶中将宽带隙CdS半导体材料外延生长在CdSe纳米颗粒表面，有效的消除了无辐射复合缺陷中心，使得样品在室温就可以测到带边发光。

Five shortcut keys allowto reach thesoftware maintenance ,Lenovo configuration , audio CD startor volume control.

五个快捷键，让到软件维护，联想电脑的配置，音频CD启动或音量控制。

However, as shown by computation, the products are thermodynamically controlled, and the S—O cleavage is predominates over the C—O cleavage.

理论计算表明，最终反应的产物是受热力学控制的， S—O键的断裂绝对地优于C—O的断裂。

On the basis of the summarization of MCM-Cs main features and its assembly and packaging technologies, the paper puts stress on relatively deepgoing studies in practically advanced MCM-C assembly process technologies as gold ball wire bonding, IC chip gold ball stud bump making, IC flip chip bonding and underfilling, in high reliability MCM-C packaging process technologies as integral LTCC substrate packaging, hermetically metal sealing, and also in the basic technological process of MCM-C assembly and packaging. Later on, it presents the effectively engineering development of two high level actual module products--a high-density monolithic processor system MCM-C , a high-speed data collecting and processing system MCM-C. Lastly, it briefly introduces various common methods of quality inspection and reliability test of MCM-C assembly and packaging in engineering practice.

论文在综述MCM-C的主要特点及其组装封装技术的基础上，重点对金丝球引线键合、IC芯片金球凸点制作、IC芯片倒装焊与下填充等实用先进MCM-C组装工艺技术和LTCC基板与外壳及PGA引线的一体化封装、气密性金属封装等高可靠MCM-C封装工艺技术以及MCM-C组装封装基本工艺流程展开了较深入的研究，有效完成了高密度单片机系统MCM-C和高速数据采集控制系统MCM-C等两种高水平实际产品的工程化研制工作，扼要介绍了工程实践中MCM-C组装封装工艺常用的质量检验方法和可靠性试验方法。

The results showed that the addition leading to -2-phenyl-2-(2-vinylpiperidin-1-yl) ethanol 7 could proceed with good diastereoselectivity and excellent yield (95%).(3) The selective N-deprotection of -2-phenyl-2-(2-vinylpiperidin-1-yl) ethanol 2 without affecting the vinyl group in the substrate were untaken.(4) The Zip reaction for the transformation of -1-(3-aminopropyl)-3-methylazecan-2-one 8 to -7-Methyl-1, Sdiaza-cyclotetradecan-6-one 9 were undertaken. The results showed that, under controlled conditions, acceptable yields (43%) could be achieved and racemization can be minimized during the ring expansion reaction.

该合成路线与文献方法相比，反应条件较温和，也缩短了反应时间；(2)哌啶衍生物2与乙烯基格氏试剂进行加成反应的条件和立体选择性，取得了较好的结果（差向异构体比为80：20，产率95％左右）；(3)不饱和哌啶衍生物7在不影响碳碳双键的情况下去除苯基甘氨醇手性辅助基的条件；(4)具有羰基α位手性的氨基酰胺8在不同条件下经Zip重排反应转变为9的反应，控制反应条件，可使反应中消旋化减小到最小的程度。

n thes paper, the oligomers with different molecular weight of monohydroxylpolyethersulfones were synthesized in solution and the optimum condition ofpolymerization was obtained; With phase transfer catalyst method,the oligomerswas obtained and transformed to monovinylpolyethersulfones macromer. Its structure was characterized with IR and 1H-NMR.

本文采用溶液法以单酚（4－氯－4'－羟基二苯砜）为原料合成了不同聚合度的单酚低聚体，得到了控制聚合度的最佳聚合条件；用相转移催化剂法成功地将单酚转化为单烯大分子单体，并用IR、1H—NMR对其结构进行了表征；测定了双键官能度均在1.90以上。

The device consisted of an array of 6×6 cell culture chambers, a drug gradient generator and fluidic control valves. Micro-dam structures of the chambers were able to trap cells while loading and drug gradient network generated drug gradient of 6 different concentrations. Also we applied hydraulic valves to control the microfluid and simulate the microenvironment of cells.

本研究介绍了一种利用SU-8负性光刻胶模具和PDMS制作双层结构的微流控细胞阵列芯片的方法，该芯片通过C型的坝结构将进样细胞拦截在芯片的细胞培养的固定区域，键合双层PDMS构成阀控制层，阀网络的开关作用成功实现了芯片通道内微流体的操控，同时芯片设计了药物浓度梯度网络，产生6个不同浓度的药物刺激细胞。

If it is manually degaussing the CRT monitors, degaussing can click button to hear "Click" sound, the screen does not jitter, that is very likely damage degaussed resistance, in the absence of sound may have a relay and control circuit .

如果是手动消磁的CRT显示器，可以按一下消磁键，听到&咔嗒&的响声，屏幕却不抖动，说明极有可能是消磁电阻损坏，如果没有响声则可能继电器及其控制电路有问题。

In the experiment, 40 Gb/s DPSK signal was demodulated successfully, and the extinction of the demodulated signal is 14.5 dB.

实验中实现了40 Gb/s差分相移键控信号的解调，解调信号消光比为14.5 dB，温度控制实现了输出结果的长时间稳定，并可在相长干涉和相消干涉之间转换。

It keeps the pointer of the mouse within the boundaries of the form and incapacitates keys CTRL+ALT+DELETE, ALT+TAB, ALT+ESC, ALT+F4 etc...

它将鼠标指针控制在窗体边缘内部，并且屏障了CTRL+ALT+DELETE， ALT+TAB， ALT+ESC， ALT+F4等键操作。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。