From electrical test results before and after IR reflow of two different group samples,coupled with devices failure analysis,it s found the oxidation of lead frame is an important factor for the mechanism of bonding lift,and the thermal mechanical effect in solder reflow can accelerate the occurrence of this potential failure.
比较回流焊前后两组器件样品的电学测量结果,并结合样品的失效分析,发现引线框架氧化也是导致焊点剥离失效的一个重要因素,而且回流焊工艺下的热机械效应,会加速原先潜在的焊点剥离失效的发生。
Peel Stress Analysis of Lead-free Solder Ball Based on Numerical Simulation;
基于数值模拟的无铅焊点剥离应力分析
Preperation of Stripper for Removing Solder from Waste Printed Circuit Boards
废旧电路板上残留焊锡剥离液的研制
Analysis on Causes of Peeling and Cracking of Surfacing Welding Layer of Hydrocracking Reactor
加氢裂化反应器堆焊层剥离和开裂原因分析
sprayable and strippable protective plastic coatings
塑料防剥离用喷射涂层剥取
Please shell some walnuts for the cake.
请为做点心剥点胡桃仁。
electrode ,metal contact, for welding machines
电焊机金属接点焊条
He was operated on for detachment of the retina.
他作了视网膜剥离手术。
A detached retina is more serious.
视网膜剥离就更严重了。
Rapid solidification and phase separation of micro spot weld joint of rapidly solidified Fe-Cu peritectic alloy foils
Fe-Cu包晶合金急冷箔点焊接头的快速凝固与相分离
Study of Flux for Microelectronics Soldering and Microstructure of Solder Joint;
微电子焊接助焊剂及其焊点组织研究
A machine that removes these short fibers from the seeds of cotton.
剥（棉籽）绒机用来剥离棉籽上短纤维的机器
The joint formed by welding.
焊接点通过焊接形成的接合点
Locator Optimization for Resistance-spot-welding Fixtures
电阻点焊焊装夹具定位点的优化设计
monoside twin shots welder(KD-16)
单面双点点焊机（KD-16）
monoside twin shots welder(KD-17)
单面双点点焊机（kd-17）
after exploration has determined that the deposit can be mined from the surface, the overburden must be stripped off first. Different stripping methods are used according to the nature of the material to be removed.
在探明了矿床可露天开采后，首先必须剥离覆盖层。根据剥离物的性质，可采用不同的剥离方法。
For example, relatively soft material, such as soil, gravel, loose or weak rock, can be removed by digging.
例如，像土壤、砾石和松石那样的松软剥离物，可挖掘剥离。
Methods The chin bone was exposed through intraoral approach.
切开粘骨膜达颏骨表面,骨膜剥离子剥离显露颏骨骨面。
