焊的

Behavior of welding arc plasma,characteristic of welding voltage,local changes of electron temperature and electron density were investigated respectively with high speed camera,inductance gauge of current and voltage,spectrometer in low power YAG laser-gas metal arc welding hybrid welding process comparing with simple GMAW welding case.

采用高速摄像机、电流电压采集仪及光谱分析仪分别研究低功率YAG激光-熔化极气体弧焊复合焊接过程中的电弧形态、电压特点及局部电子温度、密度变化。

According to the elastic theory,this paper gives partition Law of stress and quantitative answers over the overlap joint weld on skirted support .

利用弹性理论，分析推证出了裙式支座搭接焊逢内的应力分布规律及其定量解答

Engine-driven machines are used when a welder has no access to primary power for welding.

发动机驱动机构用于焊机没有焊接主电源的时候。

The bottom of the upper clip was shaped into an eccentric axis for providing the loading. A spring mechanical device fixed on the balance bars was installed for simulating the force provided by the erector spinae.

园柱状钢质夹具，固定脊柱标本，两侧焊有平衡杆，用于加载的上端夹具底部制做偏心状轴承，在平衡杆上固定弹簧装置模仿脊柱后方骶脊肌。

These products are distilled and purified from gum rosin under vacuum and proper temperature, Used in electronic solder flux and as raw material for light-colored rosin resin, also used for ester gum.

该产品由脂松香在一定的温度和真空条件下经精制提纯而成；应用于电子助焊剂，浅色松香树脂及食用级酯胶原料。

Factory covers an area of 1000 square meters, has three SMT lines, a plug-in lines and the three high-quality after bailiffs tin wire.

工厂占地面积1000余平方米，拥有三条SMT线、一条插件线和三条高质量的执锡后焊线。

The invention relates to an encapsulating structure for preventing wafer adhesives polluting wafer pads and the baseplate thereof.

本发明是有关于一种防止粘晶胶污染晶片焊垫的封装构造及其基板。

During the soldering of lead-free solders, blowholes and pad lifting problems will often occur, by applying cooling systems at 10℃, can solve the above problems.

无铅焊锡在焊接时容易产生空泡及焊盘剥离等问题，在出口处使用可达10℃的冷气系统，可明显改变上述问题。

In this paper, a new kind of head structure and motion mechanism were developed by integrating synthetically a crank-rocker mechanism and a head face eccenter mechanism, that realize the operating functions of LED chip die bonders to drive chip of, such as picking up, carrying and bonding.

为实现LED芯片键合机对芯片的高速高精确地拾取、传送和粘贴等功能，本文综合运用曲柄摇杆机构和偏心轮机构开发了一种新型焊头结构与运动机构。

ASM automatically introduced solid crystalline machines, automatic wire bonders, die making machines, automatic cutting machine, automatic spectrophotometry machines, automatic loading belt, environmental testing machine, a computer analysis of microscope, such as world-class automatic production lines.

引进了ASM自动固晶机、自动焊线机、模造机、自动切割机、自动分光机、自动装带机、环境测试机、电脑分析显微镜、等世界一流的全自动生产线。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。