chemical concentration 中文意思是什麼

chemical concentration 解釋
化學成分濃縮
  • 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...
  • concentration : n. 1. 集中。2. 【化學】提濃，蒸濃，濃縮；濃度；稠密度；【礦物】汰選，選礦，富化。3. 集中注意，專心。
  1. The soluble concentration of arsenic is dependent upon both chemical form and wastewater ph.

    砷的溶解度取決于其化學形態和廢水的PH值。
  2. Chemotaxis ( chemotactic movement ) a txis in response to a chemical concentration gradient

    趨化現象：一種對化學濃度梯度的趨化反應。
  3. ( 7 ) rainfalls can " deposit " the co2 in air, making it to take part in the process of karst, to dissolve and corrade carbonate rock. co2 concentration in soil become lower after heavy rainfall and become higher after general rainfall. ( 8 ) the value of chemical characteristic of soil water in the high elevation area is lower than that in the low elevation area

    （ 7 ）降雨可以對coz產生影響， 「沉澱」大氣中的co : ，使其參與到巖溶作用中，溶蝕碳酸鹽巖;降雨對土壤空氣中coz的影響與雨強、雨量有關，降雨量、雨強較大時，土壤空氣中的c02產生受到抑制，降雨量和雨強較小時，土壤空氣中的coz濃度升高。
  4. The distribution and change pattern of soil co2 concentration in soil profile data are analyzed as well as its effect factors. a model for soil caco3 eluviation - illuviation is developed based on mechanism of soil chemical thermodynamic principle and applying other modeling experience for reference

    本文以磚窯溝流域為例研究和分析了土壤剖面co _ 2濃度的分佈變化規律及其影響因子；對土壤碳酸鈣淋溶錠積進行了定性、定量研究。
  5. This concentrator is suitable for concentrating the fluid materials of traditional medicine, western medicine, grape sugar, starch, gourmet powder, food and milk products, chemical industry. lt can be suitable for small batch and many varieties thermal sensitive low temperature concentration

    本設備適應用於中藥、西藥、葡萄糖、釀酒、澱粉、口服液、化工、食品、味精、乳品等工業酒精回收，適用於批量小、品種多的熱敏唾低真空濃縮。
  6. Can carry on the fine filtration of fruits and vegetables juice, concentration fruit juice tea drink, ratafia, grape wine, yellow wine, fruit grape syrup, high fruit syrup, grape syrup, plant extraction, drugs manufacture, additive, chemical and so on

    可對果蔬汁、濃縮果汁、茶飲料、果酒、葡萄酒、黃酒、果葡糖漿、高果糖漿、葡萄糖漿、植物提取物、制藥、添加劑、化工等進行精密過濾。
  7. This paper introduces the latest progress of high level radioactive waste disposal programs in the world, and discusses the key scientific issues as follows ： ( 1 ) the precise prediction of the evolution of a repository site ; ( 2 ) the characteristics of deep geological environment ; ( 3 ) the behaviour of deep rock mass, groundwater and engineering material under coupled conditions ( intermediate to high temperatures, geostress, hydraulic, chemical, biological and radiation process, etc ) ; ( 4 ) the geochemical behaviour of transuranic radionuclides with low concentration and its movement with groundwater : and ( 5 ) the safety assessment of disposal system

    在介紹國內外最新研究進展的基礎上，重點討論高放廢物地質處置的若干關鍵科學問題：處置庫場址地質演化的精確預測、深部地質環境特徵、多場耦合條件下（中（高）溫、地殼應力、水力作用、化學作用、生物作用和輻射作用等）深部巖體、地下水和工程材料的行為、低濃度超鈾放射性核素的地球化學行為與隨地下水遷移行為及處置系統的安全評價。
  8. The soluble concentration of arsenic is dependent upon both chemical form and wastewater ph

    砷的溶解度取決于其化學形態和廢水的ph值。
  9. To find out the effective slurry with suitable type of oxidizer and concentration, chemical etching experiment was applied to the litao3 wafer. the chemical etching effects were analysed by measuring etching rate and x - ray spectrum

    採用化學腐蝕實驗方法研究拋光液中氧化劑種類和濃度以及拋光液ph值對鉭酸鋰晶片化學去除的影響。
  10. This paper mainly aims at the strategic demands for large - aperture lightweight mirror proposed by high - tech development. its main research contents are : select material blank for lightweight mirror according to physical and chemical properties of optical glass ; analyze and calculate the deformation quantity of the mirror with finite element method ; design and optimize mirror body structure of 400 lightweight plane mirror and 450 lightweight spherical mirror, analyze glass cutting principle, design specisl - use grinding wheel structure, select reasonable technological parameters to implement the processing of weight reduction holes on 400 plane mirror ; analyze etching mechanism of hydrofluoric acid, look for the technological parameters such as the optimal acid concentration and etching time etc. ; eliminate the stress of weight reduction holes and micro - cracks on 400 lightweight plane mirror ; discuss the processing principle and

    本論文的研究主要是瞄準國家高技術對大口徑輕型鏡的戰略需求而開展的。主要研究內容是：根據光學玻璃的物理與化學性能，選擇輕型鏡坯材料；用有限元法對鏡子的變形進行分析、計算，找出變形規律，優化設計400mm輕型平面鏡、 450mm輕型球面鏡鏡體結構；分析玻璃切削原理，設計專用磨輪結構，選擇合理工藝技術參數，完成400mm平面鏡輕量化減重孔的加工；分析氫氟酸腐蝕光學玻璃機理，尋找最佳酸濃度、腐蝕作用時間等工藝參數，實現400mm平面鏡減重孔應力與微裂紋的消除；討論分離器加工原理和工藝技術特點，完成400mm平面輕型鏡面形加工。
  11. The labour department has published the " code of practice on control of air impurities ( chemical substances ) in the workplace " and " a simple guide to health risk assessment - office environment series " that set out recommendations for employers on how to control ozone concentrations and the ozone concentration standards for the workplace

    該處發出了《控制工作地點空氣雜質（化學品）的工作守則》及《職業健康風險評估簡易指南辦公室環境系列》 ，向僱主建議控制臭氧濃度的措施，並列出工作環境的臭氧濃度標準。
  12. Catalytic oxidation - a new treatment technology for high concentration organic chemical wastewater

    催化氧化處理高濃度有機化工廢水
  13. According to the law of mass action, the law of mass conservation and the principles of chemical thermodynamics, mathematics model about components " modes of occurrence ( that is simple ions, complex anions and complex compounds ) and their concentration in dam foundation solution has been set up with balance constant method

    本文根據質量作用定律、質量守恆定律和化學熱力學的基本原理，應用平衡常數法建立了地下水水質組份存在形式（即單一離子、絡陰離子和絡合物）及其濃度分佈的數學模型。
  14. To investigate the space / time distributions and occurrence and evolution of such events, the diffusion pattern over deserts, turbulent transfer features in sandstorm weather, the particle size distribution, mass concentration and its distribution, optic properties, chemical composition and physical factors responsible for the initiation of raising sands, we made integrative observation and sounding of sandstorms deep in the large - scale desert area, including tengri, badanjilin and maowusu, with the items consisting of micrometeorological measurement, 3d wind observation, data from kb - 120 and anderson samplers of mass concentrations of sands with their spectrum, the distribution of aerodynamic particle sizes from the aps3310a, retrieval of aerosols " optic depth from sunphotometer data, assay of the chemical composition by means of neutron activiation analysis ( naa ) and integrated study of all related factors for causing sandstorm to occur, based on the observations of all kinds

    利用所取資料，系統分析了不同強度沙塵天氣條件下沙塵氣溶膠質量濃度和質量濃度譜、粒子譜分佈、光學厚度、化學組分等特徵；綜合分析了影響沙塵起動的諸物理因子在沙塵起動中的作用；用沙塵輸送模式對一次沙塵暴天氣造成的泥雨過程的形成機制進行了模擬。歷史氣象資料統計分析表明，沙塵暴有其高發期（ 4 、 5月）和高發時段（ 14 - 20時） ， 14時到20時之間發生的沙塵暴約占沙塵暴總次數的66 。揚沙和沙塵暴天氣條件下，湍流動量通量和湍流感熱通量都是重要的湍流交換，沙塵暴發生前近地層的超絕熱不穩定對沙塵暴天氣有加強作用。
  15. Chemical analysis of maleic and phtahlic anhydrides. estimate of concentration by determination of total acidity with phthenolphthalein

    馬來酐和酞酐的化學分析.用測定酚酞總酸度法評估濃度
  16. Under that condition the strain can produce the most concentration of the bioactive compounds. the physical and chemical properties of the actibacterial compounds have been studied, the results showed the bioactive substance has heat stable, acidity and weakly alkali stable. it can be dissolved in acid water, chloroform solvent, can not be dissolved in ethyl acetate, petroleum ether, alkali water. the result of thinlayer chromatography showed the bioactive compounds can give off blue and green fluorescence in the uv light. the paper chromatography demonstrate the bioactive substance may be a new construct compounds

    研究表明，該活性物質具有較強的熱穩定性， ph 9的條件下能穩定存在，但ph 12的強堿性條件下活性物質的抗菌活性幾近喪失；活性物質易溶於氯仿、酸性水、不溶於乙酸乙酯、石油醚、堿性水；薄層層析顯示活性物質在紫外光下能發藍綠色熒光等特點；由捷克八溶劑系統紙層析鑒定該抗菌活性物質不屬於四大類抗生素，可能為一新的抗菌活性物質。
  17. The main effect factors include : 1. microbial species, which seem to have different degradation rate under varied circumstances and n - alkanes ; 2. physical and chemical properties of crude oil itself, which have an important effect on biodegradation, such as conglutination, boiling point, refractive index, ingredient and concentration of the oil ; and 3. culture condition of microorganism, under which the degrading activity of microorganism will be affected by surfactant, light condition, sorbent, nutrition, co - metabolite, oxygen, temperature and salinity during the inoculation of selected or indigenous microorganisms

    其中主要影響因素包括：菌種的影響，菌種在不同的環境中和對不同碳鏈長度的碳氫化合物表現出不同的降解效率；石油物質本身物理化學特性的影響，如石油物質在水體或土壤中的濃度以及石油的粘度、沸點、折射率等特性；生存環境條件的影響，在接種入高效率的降解菌或利用土著微生物進行降解時，降解率受到生存環境中各種條件的影響，如表面活性劑、光照條件、吸附劑的利用、營養鹽、共代謝底物、氧氣、溫度、鹽度等。
  18. On the paas - normalized plots, the parent granite and the granite weathering crust are enriched in lree without ce anomaly. while the groundwaters are also enriched in lree, they display significant negative ce anomaly, indicating the fractionation of ce during water - rock interaction. based on the study of two profiles of granitoid weathering crust, we concluded that ree concentrations in the groundwaters from the granitoid weathering crust are likely related to the continued chemical weathering, as well as the ree concentrations in the crust near the water table, clay concentration and the wate r ph values

    地下水與母巖、風化殼稀土的paas標準化分佈模式基本相似，呈lree富集型，母巖中無ce異常，而水樣中有ce負異常，表明ce在水巖作用過程中發生明顯的分異；通過研究兩個典型花崗巖風化殼剖面發現，地下水的稀土含量與連續的化學風化，以及水位附近剖面上的稀土含量、粘土礦物含量以及水的ph值等有關。
  19. Surface chemical analysis - secondary ion mass spectrometry - determination of boron atomic concentration in silicon using uniformly doped materials

    表面化學分析.次級離子質譜法.利用均勻摻雜材料測定硅中硼原子濃度
  20. The results of microbial degradation of the herbicide showed that nyb1 and nyb4 had special ability to degrade the chemical from those bacteria tested in cultured media added a series volumes ( 5 - 20 % in total volume ) of bacteria suspension while the concentration of the herbicide at 50 mg / l in the media

    在精喹禾靈添加濃度為50mg l的基礎培養基中，分別加入液量為總體積5 20 nyb1和nyb4菌株的培養液，降解試驗結果表明兩種菌株均對精哇禾靈的降解作用明顯。
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