查询词典 lead powder

SnAgCu lead-free solder powders were prepared by close-coupled gas atomization. The effects of gas atomization pressure and melt superheat on the powder size and morphologies were investigated.

摘 要：采用紧耦合气雾化法制备SnAgCu无铅焊料合金粉末，研究雾化压力和熔体过热度对粉末粒径和形貌的影响。

THE JOB OF FINDING THE RIGHT combination of spark, fuse and black powder will fall to Lawrence Summers and Timothy Geithner, two friends Obama named to lead his economic team.

这份需要找到正确引爆点和契机的工作将落到劳伦斯。萨玛斯和蒂莫西。盖纳的肩上——奥巴马任命这两位搭档来领导他的经济方团队。

I do alloy plant professional system Die: stranding mode (threading die, in lane Die, Die lead), straighten die, extrusion die, Extrusion Die (Aguilar-line), the drawing module, extubation Die, Die cold pier, profiled die; Diamond Die: Natural Diamond Die, Die polycrystalline, imports polycrystalline module, and to match production with the various models of Roberts powder.

我厂专业制做合金模具：绞线模（穿线模、过线模、引线模）、调直模、挤压模、挤塑模、拉丝模、拔管模、冷墩模、异形模具等；钻石模具：天然金刚石模、聚晶模、进口聚晶模；并生产与之相匹配的各种型号拔丝粉。

Heavy gauge metal tubing with lead free, non-toxic, chip proof matte black powder finish, wood post with fine oak finish, solid steel 8 inch long mounted rods.

大尺寸、无毒无铅的金属管，不破碎的，外涂哑光黑漆。木柱用橡木材料修饰，8英寸长的钢插杆。

E. OCB mode LCD elements . Then,we added bi-functional powder and LC E7 in the bulk copolymer of Poly Acrylic Acid and EOPO,then poured the LC solution,and exposed it with 5V voltages under ultraviolet radiation. Finally,we observed the changing phenomena of the planar display of OCB cell with additional external voltage under polarized microscopy . It can be observe obviously the polymer wall in OCB cell when NO.4 LC solution having concentration of 3％ wt . At the same time,the polymer which didn't sheltered by mask will polymerize,then,lead LC into high inclined angle alignment. And it formed discontinuous structure along mask affected LC which surrounded the wall. The results measured by photoelectric instruments showed the discontinuous structure not only keeps the inner LC structure at twist mode,but also promotes the originated respond-velocity of OCB.

然后利用聚丙烯酸与EOPO之团聚共聚合物，添加双官能基粉体及液晶E7，制备成液晶溶液再注入液晶盒里，放置光罩并给予固定外加5V电压在UV下进行曝光，然后在偏光显微镜下外加电压观察液晶盒的平面显示变化现象，发现四号高分子的液晶溶液在3%时，可以明显观察未被光罩遮蔽的高分子将会聚合形成高分子格子结构，并造成液晶成高倾角排列，顺著光罩形成不连续的结构藉以影响墙周围的液晶，从光电量测结果显示，利用此种不连续结构不仅可将内部液晶结构维持在twist的状态，也成功提升OCB原有的响应速度。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。