chemical lead 中文意思是什麼

chemical lead 解釋
化學純鉛
  • chemical : adj 化學的，化學作用的；應用化學的，用化學方法獲得的。n 〈常 pl 〉化學製品；藥品。 fine chemicals...
  • lead : n 1 鉛，鉛製品。2 【航海】測鉛，測深錘，水砣。3 〈pl 〉（鋪屋頂的）鉛皮；鉛皮屋頂；【印刷】插鉛，...
  1. Metallurgy. chemical analysis. tin and lead antifriction alloys

    冶金學.化學分析.錫和鉛的抗摩合金
  2. Antimonial lead is preferable to chemical lead because of its greater corrosion resistance and strength.

    含銻的鉛較化工鉛好些，由於它有更好的抗蝕性及強度。
  3. Methods for chemical analysis of blister copper - determination of lead, bismuth and antimony contents

    粗銅化學分析方法鉛鉍銻量的測定
  4. Methods for chemical analysis of melted welding fluxes. the lead chlorofluoride - edta volumetric method for determination of calcium fluoride content

    熔煉焊劑化學分析方法.氟氯化鉛- edta容量法測定氟化鈣量
  5. Methods for chemical analysis of copper ores lead ores and zinc ores. determination of tungsten content. catalytic polarographic method in sulfuric acid - phenylhydroxy acetic acid - cinchonine - potassium chlorate system

    銅礦石鉛礦石和鋅礦石化學分析方法硫酸-苯羥乙酸-寧-氯酸鉀底液催化極譜法測定鎢量
  6. It means working to strengthen the biological weapons convention and ratifying the chemical weapons convention. it means taking the lead in a range of international export controls to limit the flow of goods and technologies that could be used to make weapons of mass destruction. during the cold war, for example, we had the cocom regime of export controls, designed to prevent the spread of dangerous technologies to the soviet union and eastern bloc

    當遇害的非裔美人比我國的其他族裔高出好幾倍時；當待在感化機構的非裔美人比待在大學的為多；當幾乎每三個非裔美人中就有一個在二十幾歲時就瑯?入獄、假釋出獄或受到形式司法系統的監督時幾乎達三分之一，這與我們社會中黑人吸毒的百分比不成比例無怪乎黑人要認為有些事情實在錯得太離譜了。
  7. The imported transparent glaze fired at lower temperature was analysed semi - quantitatively by adopting emission spectroscope. the stripping of lead and cadmium from this transparent glaze fired at lower temperature in ceramic product was determined by atomic absorption spectroscope. the effect of chemical composition on the stripping of lead and cadmium was analysed. upon the author s opinion, the overproof lead stripping from the imported transparent glaze fired at lower temperature can only be settled by adopting lead - free glaze instead of adopting low - lead prescription. the author succeeded in developing an excellent lead - free transparent glaze fired at the lower temperature of 1000 1050. the success is based on an inquiry into the feasibility of using such new agents of fusion as li2o and sro in replacement of pbo ; and on a study of the effects of the contents of sio2 ， al2o3 ， b2o3and other metallic oxides on such performances of glaze as coefficient of linear expansion, fusion temperature and transparency. it is also based on an analysis of coefficient of linear expansion of blank and glaze on an analysis of coefficient of linear expansion of blank and glaze on their correlation ; and on a study of technology for preparing glaze

    採用發射光譜儀對進口低溫透明釉進行半定量分析，並用原子吸收光譜儀測定其陶瓷製品的鉛、鎘的溶出量，分析化學成分對鉛、鎘溶出量的影響.結果表明，進口低溫透明釉採用低鉛配方不能解決鉛溶出量的超標問題，只有採用無鉛釉才能解決.探討用氧化鋰和氧化鍶等新型熔劑完全代替氧化鉛的工藝，研究釉料中氧化硅、氧化鋁、氧化硼和各種金屬氧化物的含量，對釉的線膨脹系數、熔融溫度和透明度等性能的影響.分析坯料、釉料的線膨脹系數及其相互關系和釉料制備的工藝，研製出優質的1000 1050低溫無鉛透明釉
  8. Standard test methods for chemical analysis of pig lead

    鉛錠化學分析的標準試驗方法
  9. Chemical analysis of red lead

    鉛丹的化學分析
  10. Standard practice for use of qualitative chemical spot test kits for detection of lead in dry paint films

    乾漆膜中鉛含量檢測用定性化學抽查工具標準規程
  11. The methods for chemical analysis of zinc and zinc alloys - the determination of lead, cadmium, iron, copper, tin, aluminium, arsenic, stibium, magnesium lanthanum and cerium contents - the inductively coupled plasma - optical emission spectrometric method

    鋅及鋅合金化學分析方法鉛鎘鐵銅錫鋁砷銻鎂鑭鈰量的測定電感耦合等離子體-發射光譜法
  12. Thus, such phenomena as vermilion turning black, aging of red lead and the fading of arsenic can now be more essentially represented by the chemical reactions of cinnabar having its crystal lattice transformed, lead tetroxide turned into lead dioxide, and arsenic sulfide turned into arsenic oxide

    於是，硃砂變黑，鉛丹老化，石黃退色等現象，便可以用硫化汞轉變了晶格，四氧化三鉛變成了二氧化鉛，硫化砷變成了氧化砷來更本質地加以表述了。
  13. Methods for chemical analysis of thorium nitrate - determination of lead content

    硝酸釷化學分析方法鉛量的測定
  14. Chemical analysis of lead and lead oxides. turbidimetric determination of tin

    鉛和氧化鉛的化學分析.錫的濁度分析法測定
  15. Standard test methods for chemical analysis of white lead pigments

    白鉛顏料的化學分析的標準試驗方法
  16. No. 1 market share in japan for lead free soldering equipment as n2 / air reflow, n2 / air wave soldering system & spray fluxer. we also can provide soldering chemical materials

    全日本銷售和佔有第一，無鉛製程設備如氮氣?空氣回焊爐，氮氣?空氣波峰焊爐等。我們也提供無鉛錫膏，電子化學材料等。
  17. Taking the example of china tin gruop co., ltd hechi metallurgy and chemical industry, the article details the production processes, technology conditions and production practice of removing arsenic from the second caustic sludge and lead from the second lead sludge

    摘要文章以華錫集團河池冶金化工廠精煉生產工藝為例，詳細介紹了採用二次堿渣進行脫砷，二次鉛渣進行脫鉛的生產流程、工藝技術條件及生產實踐。
  18. These physical and chemical couplings lead to a very complex transient process during the concrete pouring

    由於這些物理，化學因素的耦合作用，使混凝土施工過程成為一個十分復雜的時變過程。
  19. We will mount the historical photographs on acid - free or low alkaline paper. then the photographs can be stored inside archival boxes which are acid - free or low alkaline. this can prevent the contamination of the surface of photographs by dirt particles and wrapping paper that may lead to the chemical reaction like oxidation, yellowing and colour fastness

    部份藏品如歷史圖片及明信片更需要特別的保護，博物館會使用不含酸性或低鹼度的紙張及紙板裝裱歷史圖片，再存放于不含酸性或低鹼度的紙盒內，防止圖片上藥膜受到空氣及一般包裝紙的雜質污染而產生化學作用，如圖片氧化、變黃、退色等。
  20. In the present dissertation, some properties of sodium tellurite glasses, including density, chemical durability, stability against crystallization and fragility of glass forming liquid are studied. the melting, evaporation and solidification of sodium tellurite glasses in low gravity during drop shaft experiments are observed. except this, the phase - separation of lead borate glasses under different gravity condition is also studied

    本文亞碲酸鈉玻璃作為研究對象，系統探索了亞碲酸鈉玻璃的熔化條件，化學穩定性，玻璃抗析晶能力以及玻璃形成液體的脆性等問題，著重研究了na _ 2o - teo _ 2玻璃在落塔實驗中的熔化和氣化以及pbo - b _ 2o _ 3玻璃在落塔實驗中的分相，為解釋玻璃在不同重力條件下的熔化和分相等現象提供了理論依據。
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