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At present, even the actual line parameters of the individual absorption line can only be determined to within 10%.

目前甚至个别吸收线的实际线参数精度也只能确定到 10%以内,因此不要期望这些值的精度优于 10%。

The formula of the absorption of each spectral line of CO2 laser radiation by atmospheric CO2 are given.

本文给出了大气二氧化碳对CO_2激光辐射各谱线吸收的计算公式,并利用标准大气资料计算了各谱线的吸收值。

For example, when the 22-day EMA of price is up and the two-day EMA of Force Index becomes negative, it reveals a short-term splash of bearishness within an uptrend, a buying opportunity.

比如,当22日均线的价格上涨,2日均线力量指数变成负数,它表明了在上涨时多头的崩溃,是买入时机。

Line across a billiard table behind which the cue balls are placed at the start of a game.

台球桌上的一条线,开球时主球放在这条线的后面。

At and , we can get a univariate cubic equation in and its three roots . By the dependence of the roots and the coefficients of the equation, we can choose corresponding space points ( such that the distance is the shortest from to the point with parameters and . Thereby we can get all the data of discrete points on the cubic curve of blending surface at . Again we denote the maximum value and minimum value of planar parameter with which meets by and respectively.

利用根与系数的连续相依性,可以选相应的空间点使其距离的圆截线上对应值的点最近的两个根,从而得到处拼接曲面的截线的离散点的数据并确定出与相截的平面参数的最大最小值类似地由处拼接曲面截线的离散数据得到处的离散数据,这样可以依次计算出拼接曲面上对应所有参数点的离散点的坐标。

Having noticed that the number indicating the greatest depth was apparently in the centre of the map, I laid a rule on the map lengthwise, and then breadthwise, and found, to my surprise, that the line of greatest length intersected the line of greatest breadth exactly at the point of greatest depth,notwithstanding that the middle is so nearly level, the outline of the pond far from regular, and the extreme length and breadth were got by measuring into the coves; and I said to myself, Who knows but this hint would conduct to the deepest part of the ocean as well as of a pond or puddle?

发现那记录着最大深度的地方恰恰在湖心,我用一根直尺放在最长的距离上画了一道线,又放在最宽阔的地方画了一道线,真使人暗暗吃惊,最深处正巧在两线的交点,虽然湖的中心相当平坦,湖的轮廓却不很规则,而长阔的悬殊是从凹处量出来的,我对我自己说道,谁知道是否这暗示了海洋最深处的情形之正如一个湖和一个泥水潭的情形一样呢?

By the combination of experimental results with theory of crystal growth, some growth models and growth mechanisms were proposed. Research results confirmed that pillar-shaped TaC whisker with spherical droplet at the end grew via a vapor-liquid-solid mechanism, pillar-shaped whisker with pyramid-like end was formed via a vapor-solid mechanism, awl-shaped TaC whisker with zigzag end formed via a liquid-solid mechanism, awl-shaped TaC whisker with growth step at the end has a growth mechanism of screw dislocation mechanism. The growth mechanism of dumbbell-shaped MgO nanowhisker and NaCl particle-decorated MgO nanowhisker is VS; C and MgO powder-yielded MgO nanowhisker was formed via a VLS mechanism, Mg powder-yielded MgO microwhisker and MgO microsized or nanosized crystal sheet grew via a VS mechanism. In the Si and SiO〓 nanostructures, Si nanowires formed in higher-temperature zone grew via oxide-assistant mechanism, while Si nanowires or nanorods formed in lower-temperature zone have a growth mechanism of VLS, and the growth mechanism of SiO〓 nanowires is VS.

研究确定呈平直柱状且头部带有球形颗粒的TaC晶须是通过气-液-固机制生长;头部呈之字型的锥状TaC晶须则通过液-固机制生长;晶须头部为四棱锥状的粗长TaC晶须的生长机制是VS机制;顶端呈锥状且有生长台阶的TaC晶须通过螺位错机制生长;哑铃状氧化镁晶须和氯化钠颗粒修饰的氧化镁纳米晶须的生长机制是气-固机制:当采用C+MgO粉提Mg源时形成的氧化镁纳米晶须的生长机制是VLS,而采用直接热蒸发Mg粉时得到的氧化镁微米晶须的生长机制为VS,纳米和微米晶片的生长机制均为VS机制;在高温区,硅纳米线的生长机制是助氧化机制,在低温区硅纳米线和纳米棒的生长机制是VLS机制,而氧化硅纳米线的生长中VS机制占主导地位。

For wire bonding,we got methods to avoid low-k material layer crack and IMC crack by gold wire selection,capillary design optimization,and wire bonding process window study;Wire sweep issue was declined,after use reverse wire bonding technology to get low wire loop,define high wire loop and low wire loop between neighbour wires to reduce wire cross and split transfer course into several segments by different transfer speed to control mold flow;For molding and to different packages,as a physical method,add suitable presser during different cure process,it can reduce warpage value;As chemical methods,optimized component of molding compound or added flexiblier,it can decline thermal stress and warpage.

在引线键合方面,通过对不同纯度金线的选择、劈刀设计的优化、以及对引线压焊工艺窗口的研究,找到了可降低焊盘碎裂,金铝间化合物分层等问题的方法;通过使用反向压焊来控制线线弧高度和在邻近线间使用高(来源:A7aB4848C论文网www.abclunwen.com)低线弧来控制线弧以及模塑注塑速度细分化的方法,有效降低了冲线值;在模塑方面,针对不同封装形式,通过封装模块在烘烤过程中优化外加压力的时机,利用物理方法有效减低了翘曲;此外从化学角度出发,通过对模塑材料配方的优化以及添加应力释放剂,有效降低了封装内的热应力,减小了封装模块的翘曲。

Based on the previous experiments, we choose CNTs/CdS core-shell nanowires as inorganic materials and poly(benzyl-ether) dendrons with thiol functionalities as organic solubilizer. The solubility of CNTs/CdS core-shell nanowires in normal solvents was expected to improve through chemical interactions between core-shell nanowires and solubilizer. The enhanced solubility can improve facility in processability. It also provides a new application method in nanomaterials.

本论文在课题组原有工作的基础上,以制备可溶、易加工的有机-无机复合纳米材料为应用目标,选择具有自己课题组研究特色的CNTs/CdS核壳纳米线结构作为无机材料,选择带巯基的聚苯甲醚树枝状分子作为有机增溶剂,通过带巯基的聚苯甲醚树枝状分子对CNTs/CdS核壳纳米线的化学作用,改善了核壳纳米线在常用有机溶剂中的溶解性能,为材料的湿法加工提供了基础,也为类似纳米材料的应用开拓了一种新的方法。

In this thesis, the radiation principle and the structure of slot antenna are studied and the impacts on its performance of every structure parameter in a slot antenna design are analyzed. On this foundation, a design plan of planar slot array antennas is proposed. The design has some structural feature as follows:(1) with different dielectric layers and microstrip line structure to guide the electromagnetic wave effectively;(2) the feeding network formed of microstrip line can match with the radiating slots expediently;(3) in order to increase the bandwidth of the antenna, the wider slot and branched feeding microstrip line are adopted to form a double resonance.

本文对缝隙辐射的原理、缝隙天线的结构作了探讨,分析了缝隙天线设计中各结构参数对其性能的影响,并在此基础上提出一种平面型缝隙天线的设计方案,它具有以下的特点:(1)采用分层结构,以不同的介电系数和微带线结构形成对电磁波的有效引导;(2)利用微带线构成馈电网络可以方便地与辐射缝隙进行匹配;(3)增大缝隙的宽度,并利用馈电微带线的枝节形成双谐振,以增加天线的带宽。

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This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。

There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.

双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。