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The influence of the size of pad and solder bump, the volume of eutectic solder and reflow temperature on the geometry of duplex SnPb solder joint with high Pb solder bump and eutectic SnPb fillet was simulated by finite element method with the software of SURFACE EVOLVER.

应用SurfaceEvolver软件，对含高铅焊料芯片凸点和共晶SnPb焊料形成的复合焊点的形态进行了有限元模拟，考察了焊盘大小、芯片凸点尺寸、焊料体积、焊接温度等焊点的设计及工艺参数对焊点形态的影响。

Investigted and studied the discard the slay of wenxing spelter worksto the near area pollution in the city of Xuanwei, and proposed restoration the ecological systemas soon as possible is of necessity, importance and the method step.",,"

要：宣威市文兴炼锌厂虽然取缔停产了，但是随意堆放的废弃炉渣产生的污染远没有结束，炉渣中所含的铜、锌、汞、铅、镉、镍等重金属元素对当地居民生产、生活和健康造成的危害是大的；本文调查分析了宣威市文兴炼锌厂废弃矿渣对周边地区污染状况，提出了尽快恢复生态环境的必要性、重要性和方法步骤。"，"

According to the research of Pb isotopic, the metallogenetic material mainly originated from the Permian basalts; the study of sulfur isotopic find that the sulfur of the basalt-type copper deposits and carbonaceous sedimentary interlayers-type copper deposits originated from both Permian basalts and evaporate of sedimentary section, S in bauxitic mudstone-type copper deposits originated from evaporate of sedimentary layers.

研究区三种类型铜矿的铅同位素示踪研究，成矿物质主要来自于邻近的二叠纪玄武岩；硫同位素研究结果显示，玄武岩型铜矿和含碳沉积岩夹层型铜矿中的硫有两种来源：二叠纪玄武岩和蒸发岩中的硫；而铝土质泥岩铜矿中的硫主要来源于沉积地层中蒸发岩的硫。

On the basis of the fundamental theory as illustrated in binary Pb-Ag system,a segregating method by crystallization has been adopted to separate lead from lead-silver bullion of 20-25wt% Ag,and thus a production alloy more than 90 wt % Ag was obtained.

根据 Pb—Ag 二元相图的基本理论，采用凝析结晶分离的方法，分离铅银合金，使合金中的含 Ag 量由20～25%富集到95%以上，并探索了分离过程中的一些基本规律和现象。

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％。