对重

SnPb eutectic solder reflow on BGA pad metallized with Au/Ni to form solder bump with induction self excite heat under alternate electromagnetic radiation is performed, and impacts of induction self excite heat and solid state aging on interfacial reaction between SnPb eutectic solder and Au/Ni metallization are investigated.

进行了交变电磁辐射下附Au/Ni镀层BGA焊盘上SnPb共晶钎料球感应自发热重熔形成钎料凸台的实验，并分析了感应自发热重熔以及固态老化对SnPb共晶钎料与Au/Ni镀层焊盘界面反应的影响。

Design and amelioration design the hardware circuit of system: It is composed of main computer, capacitance moisture sensor, electronic balance and signal conversion box. Capacitance moisture sensor is the core of the system.

由此可见，采用神经网络技术对容重、温度及电容测量值进行融合后建立的校正模型，能够解决系统的温度、容重补偿和非线性校正问题，从而提高了系统的检测精度。

The effects of feeding alanine-enriched mulberry leaves on the larval weight, silk gland weight and cocoon characters of the silkworm Bombyx mori L. were studied.

本研究以添加丙氨酸的桑餵食桑蚕Bombyx mori L。，解其对桑蚕幼虫重、丝腺重、蚕茧特性所造成的影响。

The test results show that by substituting the spicule cast iron wedge with combination wedge, the vertical vibration of the car can be improved greatly, the vertical acceleration and ri

试验结果表明，通过换装组合式斜楔减小转向架系统的相对摩擦系数，可以明显改善车辆的垂向振动性能，使空、重车的垂向振动加速度及垂向运行平稳性指标降低，并且对车辆的横向力、脱轨系数及轮重减载率的影响较小。

By so doing he had effectively fostered and brought the Chinese national spirit up to a new level.

本文主要探讨了孙中山对民族的爱国精神、重和精神、自强精神、重德精神的继承和弘扬。

By using complementary variable method to analyze the state-changing equations of this queueing system, the generating function of stationary probablity distribution of retrial queue length, some performance indexes such as three different stationary state probablity,stationary availability, and stationary failure frequence of the transfer-unit are derived.

研究通信网络中交换单元的可修模型M1，2，3/G/1，呼叫的到达是重试性的，利用补充变量法对排队系统的状态转移方程作了分析，求得了重试队列稳态队长概率分布的母函数以及交换单元的处于三种不同状态下的稳态概率、稳态可用度及稳态故障频度等性能指标。

With the increasing of soil moisture,the individual leaf area,the leaf dried mass per seedling,the leaf fresh mass per seedling and leaf area per leaf dried massincreased,but the leaf thickness and succulence degree decreared;The content of leaf chlorophyll was sensitive to soil moisture,under 5 kinds of different soil moisture status and the content of leaf chlorophyll was ...

结果表明：随着土壤含水率的增加，单叶面积、单叶鲜重、单叶干重、比叶面积逐渐增大，但叶片厚度、肉质度减小；叶片的叶绿素含量对土壤水分状况较为敏感，5种水分处理下苗木叶片的叶绿素含量有较大的差异。

The dynamic interfacial tension between heavy alkylbenzene sulfonate and crude of Daqing oilfield was measured using the spinning drop tensiometer.

测定了重烷基苯磺酸盐溶液与大庆原油间的动态界面张力，考察了NaOH、Na2 CO3 、部分水解聚丙烯酰胺和重烷基苯磺酸盐对动态界面张力的影响。

In order to develop heavy toll standards required by the heavy toll on the current mode of road and bridge toll data collection.

为了制定计重收费标准，需要按计重收费模式对当前路桥收费数据进行采集。

We introduce some concepts, such as yon Neumann algebras, factor von Neumann algebras, nest algebras and so on, and give some well-known theorems that we will use in this paper. In Chapter 2, we put our attention on linear maps that preserving zero Jordan triple product on nest subalgebrasof factor yon Neumann algebras.

第二章首先对因子von Neumann代数中套子代数上保Jordan三重零积的线性映射进行了研究，证明了从因子von Neumann代数中套子代数到任一有单位元的Banach代数的保Jordan三重零积的单位线性双射是Jordan同构。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。