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- The electroless Sn Pb alloy plating process in methylsulfonic acid system was studied. 研究了甲基磺酸體系化學(xué)鍍錫鉛合金。
- The influence of electric pulse modification (EPM) process on the solidification structure of Sn-15% Pb alloy was experimentally investigated. 研究了電脈沖處理對Sn-15%25Pb合金凝固組織的影響.
- 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. 選用低熔點(diǎn) Sn-3 .;5%25 Pb合金澆注試樣;用實(shí)驗方法研究直澆道電磁攪拌對鑄坯凝固組織的影響;并用數值模擬作為輔助手段分析了影響因素
- 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. 介紹了疊層片式電感三層端頭電極即銀基底電極、鎳層、錫 -鉛合金鍍層的性能及制備工藝。
- Microstructures and wear resistance of spray formed Al Pb alloys were studied and compared with those of conventional cast Al Pb alloy. 研究了噴射沉積成形Al?Pb 合金的顯微組織及耐磨性能， 并與鑄態(tài)Al?Pb 合金進(jìn)行了對比。
- Study on Gold and Silver Recovery from the As - Cu - Pb Alloy Produced by Copper Dross Smelting with Soda- Lead Concentrate in a Smelter 從浮渣鉛精礦熔煉產(chǎn)的合金中回收金銀的試驗研究
- F can promote the emission of Pb,Cd,Zn and Cu. 氟會(huì )促進(jìn)Pb,Cd,Zn和Cu的逸放。
- The chemical symbol for copper is "Cu". 銅的化學(xué)符號是Cu。
- Pupils with 90% or more are awarded Grade A. 滿(mǎn)90分的學(xué)生評為甲等。
- The hotel has 25 bedrooms, all en suite. 飯店有25間帶浴室的客房。
- Let it be 4:25 tomorrow afternoon. 就定明天下午4點(diǎn)25分吧。
- He went belting up/down the motorway at 90 mph. 他在高速公路上以每小時(shí)90英里的速度疾駛。
- He was already balding at the age of 25. 他25歲就禿頂了。
- This method is able to measure Mn,Cu,Pb,Zn,Co,Ni and P quickly. 該方法也可同時(shí)用于:Mn、Cu、Pb、Zn、Co、N i、P等雜質(zhì)元素的快速測定。
- A student who gets 90% is graded A. 凡得90分的學(xué)生列為甲等。
- The business bombed out with a$25,000 debt. 生意失敗了，還欠了25000美元的債。
- Cu and Cr, and a part of Cd? Pb and Ni remain in the bottom ash. 大部分的重金屬元素Zn、Cu和Cr殘留在灰渣中 ,Cd、Pb和Ni部分殘留在灰渣中
- His salary was$25,000 per annum. 他的薪水每年為25,000美元。
- Brandy of 90 proof is about 45% alcohol. 九十度的白蘭地約含酒精百分之四十五。
- Her father is 90 years old and still going strong. 她父親九十歲了，仍然很健康。
