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- The electroless Sn Pb alloy plating process in methylsulfonic acid system was studied. 研究了甲基磺酸体系化学镀锡铅合金。
- The influence of electric pulse modification (EPM) process on the solidification structure of Sn-15% Pb alloy was experimentally investigated. 研究了电脉冲处理对Sn-15%25Pb合金凝固组织的影响.
- The effect of N EMS on solidification structure of continuously cast metal of Sn 3.5%Pb alloy has been investigated by experiments and numerical analyses. 选用低熔点 Sn-3 .;5%25 Pb合金浇注试样;用实验方法研究直浇道电磁搅拌对铸坯凝固组织的影响;并用数值模拟作为辅助手段分析了影响因素
- Properties and preparing process of tri layer films with Ag base coating, Ni electrodeposit, Sn Pb alloy for terminal electrode of multilayer chip inductor were described. 介绍了叠层片式电感三层端头电极即银基底电极、镍层、锡 -铅合金镀层的性能及制备工艺。
- Microstructures and wear resistance of spray formed Al Pb alloys were studied and compared with those of conventional cast Al Pb alloy. 研究了喷射沉积成形Al?Pb 合金的显微组织及耐磨性能， 并与铸态Al?Pb 合金进行了对比。
- Study on Gold and Silver Recovery from the As - Cu - Pb Alloy Produced by Copper Dross Smelting with Soda- Lead Concentrate in a Smelter 从浮渣铅精矿熔炼产的合金中回收金银的试验研究
- F can promote the emission of Pb,Cd,Zn and Cu. 氟会促进Pb,Cd,Zn和Cu的逸放。
- The chemical symbol for copper is "Cu". 铜的化学符号是Cu。
- Pupils with 90% or more are awarded Grade A. 满90分的学生评为甲等。
- The hotel has 25 bedrooms, all en suite. 饭店有25间带浴室的客房。
- Let it be 4:25 tomorrow afternoon. 就定明天下午4点25分吧。
- He went belting up/down the motorway at 90 mph. 他在高速公路上以每小时90英里的速度疾驶。
- He was already balding at the age of 25. 他25岁就秃顶了。
- This method is able to measure Mn,Cu,Pb,Zn,Co,Ni and P quickly. 该方法也可同时用于:Mn、Cu、Pb、Zn、Co、N i、P等杂质元素的快速测定。
- A student who gets 90% is graded A. 凡得90分的学生列为甲等。
- The business bombed out with a$25,000 debt. 生意失败了，还欠了25000美元的债。
- Cu and Cr, and a part of Cd? Pb and Ni remain in the bottom ash. 大部分的重金属元素Zn、Cu和Cr残留在灰渣中 ,Cd、Pb和Ni部分残留在灰渣中
- His salary was$25,000 per annum. 他的薪水每年为25,000美元。
- Brandy of 90 proof is about 45% alcohol. 九十度的白兰地约含酒精百分之四十五。
- Her father is 90 years old and still going strong. 她父亲九十岁了，仍然很健康。
