查询词典 solder

Wuxi Torch Electric Machinery Manufacturing Co., over the years, specializing in the production of various series of solder machines and various流水生产线equipment.

无锡圣火电气机械制造有限公司，多年来，专业生产各种系列焊锡机及各种流水生产线设备。

Metal components of a product, such as solder or base metals in electroplate

目前， 这些豁免不包括产品的非金属或非贵重金属部分。

Effects of P addition on the properties of Sn-9Zn eutectic lead-free solder alloy have been studied.

以Sn-9Zn合金为研究对象，考察了P的添加对其性能的影响，并对其机制作了初步探讨。

During reliability test, the degradation of shear strength is observed for both eutectic and lead free solder balls.

在可靠性加速试验过程中，无铅和有铅两种焊球的推力数值都有不同程度的衰减。

In this paper, the duplex solder joints geometry of flip chip is simulated by Surface Evolver program.

摘 要：本文采用 Surface Evolver 软件对倒装焊复合焊点的几何形态进行了模拟。

Use the Surface Evolver program to simulate the solder profile evolution and describe the effect on arcing pressure for the wetting and spreading of the droplet.

采用Sur faceEvolver有限元分析软件进行了数值模拟，给出了电弧压力对熔滴铺展成型的影响规律。

This work also presents a computational model using the Surface Evolver program to analyze the stability of solder bridging for area array type package.

本论文接著利用Surface Evolver软体建立一计算模型以分析面积型态构装锡桥之稳定性。

To smear solder flux paste or colophony on the PCB board of the dismantlement of BGA, remove the tin of welding plate of PCB board with ferrochromium

在拆除BGA的PCB板焊盘上涂上助焊膏或松香水，用电铬铁将PCB板焊盘上的锡去除

Profiling armor plate passes solder hammer and floor structure girder to suffer force effectively to work jointly, achieve steel structure bridge and ferroconcrete wing cut force to deliver.

压型钢板通过焊钉和楼面结构钢梁有效地共同受力工作，实现钢结构梁和钢筋混凝土翼板的剪力传递。

The modal tests of PCB and PCB assembly (free boundary condition and fixed boundary condition) were carried out. The equivalent elastic modulus and damping parameters of PCB can be gained, and the fixed boundary condition of finite element model was also determined. These will help to the following work.Second, drop impact tests of three different heights were carried out. Strains and acceleration responses of PCB were measured. Failed BGA packages of different test conditions were dyeing, and cross section analysis of failed solder joints was conducted.

针对JEDEC标准试件的局限性，提出了设计便于统计学研究焊点可靠性的试验试件的构想，利用有限元模态分析方法确定并验证了用圆形PCB组件替代JEDEC标准试件的可行性；通过一系列模态试验和有限元模态分析，确定了圆形PCB组件的相关试验参数，这不仅为跌落碰撞下PCB组件有限元模拟确定了较为合理准确的有限元模型，而且为正确地评价跌落碰撞下PCB组件的可靠性问题奠定了基础。2。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。