1)Lead-free[英][,led 'fri:][美]['l?d 'fri]无铅化
1.The Lead-free Challenge:Materials for Assembly and Packaging;封装装配技术所用材料的无铅化
2.Study on Lead-free Stabilizer for Electroless Nickel Plating;无铅化学镀镍稳定剂研究
3.Research and development of a new lead-free modified PVC pipe of good resistance to shock新型无铅化高抗冲改性聚乙烯管材的研制
英文短句/例句
1.The Lead Free Technology Research and Inspection for Electronical Product Base on Surface Mount Technology;基于SMT电子产品的无铅化技术研究及检测
2.Challenge and Measures for Lead-free Production of Electronic and Electrical Products;电子电器生产无铅化的挑战与应对措施
3.Costs and Benefits of the Elimination of Lead from Gasoline in China;我国实施汽油无铅化政策的成本-效益分析
4.A lead sulfate mineral, PbSO4, occurring in colorless or tinted crystals and formed by the weathering of lead ore.铅矾,硫酸铅一种硫酸铅矿,PbSO4,出现在无色或浅色晶体内,由铅矿风化形成
5.galena [lead sulphide]方铅矿〔铅硫化物〕
6.Cleansing of Vehicle - Use Unleaded Gasoline & Gasoline Cleansing Agents;车用无铅汽油的清洁化与汽油清净剂
7.Density Sintering of LKNN Lead-free Piezoelectric Ceramics Doped With MgOMgO掺杂LKNN无铅压电陶瓷的致密化烧结
8.Thermal reliability optimization study on PBGA lead-free solder jointPBGA无铅焊点热可靠性优化研究
9.Effects of oxidation on wettability of Sn-Zn alloys氧化对Sn-Zn系无铅焊料润湿性的影响
10.Effect of Ge on Oxidation Resistance of Sn-0.3Ag-0.7Cu Lead-free SolderGe对Sn-0.3Ag-0.7Cu基无铅钎料抗氧化性影响
11.Development of Leadless Flux for Overglaze Color by Alkaline Earth Composite Instead of Lead Oxide;碱土金属氧化物复合代替氧化铅研制无铅釉上彩熔剂
12.Development of lead free and ETU free vulcanization System for ECO无铅无乙基硫脲氯醚橡胶硫化体系的开发
13.Leaded or unleaded?含铅还是无铅汽油?
14.The Synthesis of the New Activator and Applied in the Lead-free Solder Paste新型活化剂的合成及在无铅焊膏产品上的应用
15.Separation and Controlling of Intermetallic Compounds in Lead-free Sn-Ag Solders;Sn-Ag系无铅焊料中金属间化合物的形成与控制
16.A Study of Sn-9Zn Lead-free Electronic Solder and Its Improvement by Alloying;Sn-9Zn无铅电子焊料及其合金化改性研究
17.The Research on Oxidation Resistance and Wettability of Sn-Zn System Lead-free Solder;Sn-Zn系无铅钎料抗氧化性与润湿性研究
18.Effect of Trace Phosphorus on the Oxidation Resistance of Lead-Free Solder Used in Wave Soldering;微量磷对无铅波峰焊钎料抗氧化性影响的研究
相关短句/例句
lead free无铅化
1.It lists the update status and existent problems of PCB lead free.这篇文章分析了中国RoHS指令给PCB行业带来的影响和PCB企业所采取的应对措施,以及PCB无铅化的最新状况和存在的问题。
2.In the course of the lead free reflow soldering,lead and Lead free of reflow soldering affect the quality of product.在再流焊无铅化过程中,再流焊的有铅要素与无铅要素的兼容性直接影响产品质量。
3.Research of PCBA Assemble in Lead Free;本文通过分析PCBA可制造性的内涵 ,提出装联无铅化的关键所在 ,重点论述了在采用Sn -Ag -Cu和Sn -Cu钎料的条件下 ,实现无铅再流焊和无铅波峰焊的技术途径和对
3)Pb-free无铅化
1.4 DIP-IPM production process are introduced,which includes Pb-free,isolation sheet wit.本文首先分析了第四代超小型DIP-IPM内部电路的构成和功能,然后详细介绍了第四代DIP-IPM生产过程中的关键技术,包括无铅化、高热传导性绝缘片、chip-to-chip导线直接连接以及ASIC技术,最后与第三代(Ver。
2.Pb-free hot air leveled PCBs invariably have been excluded.无铅化热风整平PCB组件往往会被忽视。
3.So Pb-free of the soldering technology has become an inexorable trend of SMT development.目前在SMT生产过程中普遍采用的是锡铅焊锡,会对人体健康和周围环境造成很大的影响,因此有铅技术的无铅化问题已经是SMT发展的必然趋势,本文主要结合具体试验浅谈一下有铅工艺无铅化的一个分支——导电胶粘接工艺可行性与高可靠性的问题。
4)Pb-free catalyst无铅催化剂
5)Lead-free assembly无铅化组装
6)lead-free technology无铅化技术
延伸阅读
无铅化所谓“无铅”,并非绝对的百分百禁绝铅的存在,而是要求铅含量必须减少到低于1000ppm(<0.1%)的水平,同时意味着电子制造必须符合无铅的组装工艺要求。“电子无铅化”也常用于泛指包括铅在内的六种有毒有害材料的含量必须控制在1000ppm的水平内。欧盟指令的附加条款规定,服务器、储存设备、网络基础设备的铅基焊接、含>85wt%铅的锡铅合金如95wt%pb-5wt%sn的晶圆凸块倒装片焊接,可获得豁免,可延至2010年实施指令要求。原因是尚无技术上可行的解决方案,相关公司聘请律师向欧盟申请豁免获得批准。