過堿性度 的英文怎麼說
中文拼音 [guòjiǎnxìngdù]
過堿性度
英文
peralkalinity-
The welding performance of homemade wear - resistant cast steel has been studied base on the weldability tests, the repair welding procedures of wean - resistant cast steel ( abrasion - plates ) have been made up, the results show that satisfying repair welding quality can be attained with such welding conditions as the low hydrogenous alkalescent welding rod, preheating and slow cooling, strictly maintaining the interbedded temperature of 250 ~ 300 and controlling welding technique
通過對其焊接性能的試驗研究,制定了該類鑄鋼件(磨耗板)的補焊工藝:低氫型堿性焊條,預熱與緩冷相結合的工藝措施,嚴格控制層間溫度( 250 ~ 300 )及焊接工藝規范,可獲得滿意的修復質量。A corrective for overacidity is an alkaline substance.
酸性過度的中和劑是堿性物質。The factors influencing on the performance of ash - jd such as the moore ratio of monomers, the reaction temperature and time, concentration, the ph value of reaction solution and the drippy speed of formaldehyde were studied carefully. through experiments, the optimum level of those factors was gained
論文詳細研究了反應單體的摩爾比、反應溫度、時間、濃度、反應溶液的酸堿度及甲醛的滴加速度等對產品ash - jd性能的影響,通過試驗,得到了這些因素的最佳水平。Under alkaline condition, the descreasing of esterified copolymer viscosity indicate the esterified copolymer is slow releasing. the effect of the complex superplasticizers and the single one is compared in this paper
通過對水泥一水體系的ph值和酯化產物的ph對性能的影響的討論,確定酯化產物使用時的最佳酸堿度。Effects of diverse environmental factors on the growth rate ( od4oo ) and nitrogenase activity ( ara ) of the strain w12 hi nitrogen - free culture were investigated in our experiments. the results implied that the strain w12 could easily adapt to different cultural conditions : it could use various carbon sources ( especially glucose, sucrose, malic acid, mannitol ), propagate quickly and fix nitrogen at a temperature range of 15 ? to 40 ? and at 25 - 35 ? for optimum, at a ph range of 4 to 8. 5, at a saline concentration range of 0. 01 % to 1. 5 % ; low nlv " concentration had little effect on its nitrogenase activity. ara could also be detected when it grow in the culture media with 5mmol / l ntv "
W12菌株對環境因子的適應性研究:無氮培養條件下,測定溫度、碳源、酸堿度、滲透壓對w12生長及固氮能力的影響,結果表明,在15 - 40下均能生長並表達固氮酶活性,其最適生長及固氮的溫度為25 - 35 ;能利用葡萄糖、蔗糖、蘋果酸、甘露醇等多種碳源生長並固氮,當培養基中同時存在蔗糖和蘋果酸時,細菌生長和固氮活性最強;在偏酸和偏堿的條件下( ph4 . 5 - 8 . 5 )均能保持較強的生長勢和較高的固氮酶活性,並能通過調節自身代謝平衡並適應環境的酸、堿性變化,使培養液趨于中性:能耐受較高的滲透壓,培養液中卜、 5 naci濃度對其生長和固氮酶活性影響不大,當naci濃度升至2時,菌株的生長勢及固氮酶活性才有所下降:低濃度的鉸對其固氮酶活性影響不大,在0The expression efficiency difference between ped5 and pcdhfrl, a vector utilizing cmv enhancer / promoter ( pcmv - ie ) for foreign protein production, was analyzed using human interferon - p ( ifn - ) gene and human secreted alkaline phosphatase ( seap ) gene as reporters. when analyzed in transient expression, ped5 showed a little more protein produciton than pcdhfrl. however, in continuous expression, when serum concentration was lessened to slow down cell proliferation, ped5 expressed 3. 1 times more reporter proteins than pcdhfrl, which implied that pef - io was less affected by cell cycle status in contrast to pcmv - ie, making ped5 a good expression vector for foreign protein production
應用人-干擾素( ifn - )和人分泌型堿性磷酸酶( seap )基因作為報告基因,對含有巨細胞病毒即早期啟動子( p _ ( cmv - ie ) )的表達載體pcdhfr1和ped5表達外源蛋白的能力進行了比較,發現對于瞬時表達, ped5略好於pcdhfr1 ;在穩定表達中,通過降低血清濃度,使細胞增殖緩慢,這時ped5表達外源蛋白的能力較pcdhfr1高3 . 1倍。The electrode was found to decrease the solubility of dithizone in alkalescence solution and effectively minish the lose of deoxidize state of metal. third, a potentiometric sensor was prepared by adding copper diethyldithiocarbamate directly into the carbon paste mixture, and the electrode was found has nerst response to copper ion in solution. and in our research two pharmaceutical selective electrodes were fabricated by coating polyvinyl chloride ( pvc ) which contained electroactive material on carbon rod electrode
第二,利用- cd與環氧氯丙烷形成的交聯聚合物( - cdp ) (不溶性)包合了雙硫腙,然後將- cdp與雙硫腙包合物樹脂作為修飾劑制備了碳糊修飾電極,利用陽極溶出伏安法( asv )測定了pd ~ ( 2 + ) ,實驗發現通過包合降低了雙硫腙在堿性溶液中的溶解度並且減少了金屬還原態的流失,取得了較好的效果。By varying flow velocity and the concentration of hmi ( hg2 + ) in influent water and adding usual cations ( ca2 +, mg2 + ) or anions ( cl -, so42 - ) into raw water, the effects of hmi removal by wbaer and cations exchange resins from dk have been contrasted
試驗中通過改變流速(通過離子交換柱) 、進水中重金屬離子( hg2 + )的濃度以及向原水中引入天然水體中常見的陽離子( ca2 + 、 mg2 + )和陰離子( cl 、 so42 )等方法,比較了弱堿性陰離子離子交換樹脂和陽離子交換樹脂對飲用水中微量重金屬離子( hg2 + )的去除效果。Results came as follows : in this dissertation, we found that it was the smallness of the positive electrode capacitance that limits the performance of carbon based supercapacitors in alkaline electrolytes, and the performance could be meliorated if the active material loaded on positive electrode increased. activated carbon electrode was proved to have good capacitor performances in neutral electrolyte such as ammonium sulfate solution and ammonium nitrate solution, but a correlated problem is the corrosion of the metal current collector
本文通過考察活性炭電極在堿性電解液中的電極行為,指出活性炭電極在堿性溶液中正極性能較差是影響碳基超級電容器性能的重要因素,增大正極活性物質的載量能夠使電容性能得到一定程度的改善,同時發現活性炭電極在硫酸銨和硝酸銨等中性電解液中具有優越的電極性能,但存在金屬集流體的腐蝕問題。Good alkali resistance, dissolved only in hot strong acid, good thermal endurance ; it begins to decompose into red pigment when losses water of crystalliza - tion under temperature higher than 150
耐堿性、耐于熱熱的強酸,耐熱度較高,溫度超過150以上失去結晶水開始分解為紅色顏料。The polyvinyl alcohol cut fiber with high tenacity and high modulus is a new product produced with advanced technology after transforming and expanding the dquipment based on the original production process for the vinylon fiber. the pva cut fiber has high tenaity and modulus, strong resistance to chemicals, especially the resistance to alkai and it also has good resistance to weathering
高強高模聚乙烯醇纖維fwb是我公司在原維尼綸纖維生產工藝上通過對設備改造和擴建,應用高新技術生產出的產品,使纖維具有強度高,模量高,耐化學藥品性特別是耐堿性,耐候性良好。In a word, wbaer can effectively remove micro - quantity hmi from dk with alkali metals, alkaline - earth metals and anions at high concentration. on the basis of lots of regeneration experiments of wbaer ( d301g ), the best regeneration manner ( regurgitation regeneration ), the optimal regeneration agents ( h2so4 and naoh ) and the optimum operating parameters of regeneration are obtained
論文進而對d301g型弱堿性陰離子交換樹脂進行了再生試驗研究,確定了最佳再生方式(逆流再生) ,最佳再生劑( h2so4和naoh )以及酸液再生時的最佳濃度范圍( 2 % 4 % )和最佳流速范圍( 3 4m / h ) ;並通過正交試驗確定了逆流再生過程中的最佳運行參數組合。The results demonstrate that the theory predicted values of compression, bulk modulus, linear expansion, and thermal expansive coefficient of compressed solids are very agreement with the corresponding experimental data. in summary, the error with respect to theory prediction and its causes are pro bably analyzed in detail. the discussion suggests that the function of the phenomenological short - distance repulsive force constant a ( v ) and approximation for anderson - griineisen parameter 5t ( v ) proposed in this paper are valid and applicable in high pressures ( up to loogpa ) and high temperatures ( from debye temperature 0d to melting temperature tm ) for many types of solids
在本文最後一節,為了驗證固體在等壓過程中anderson grhneisen參量乓與體積膨脹的唯象假設:乓久w兀的有效性,及由此假設而推導出來的等壓態方程的廣泛應用性,本論文主要針對十六種堿金屬鹵化物、三種堿性氧化物、三種硅酸鹽礦物質的線膨脹八n 、體積熱膨脹v vo ( n 、熱膨脹系數a ( n 、體積彈性模量肘d等隨溫度的變化作了理論上的預測,且與相應的實驗數據作了比較與分析Ni - cd cylindrical cell has the properties of small internal resistance, long service life, resistant to over charge and discharge, low self discharge, wide operation temperature range ( - 20 + 40 ) and high reliability. they are suitable for high rate discharge and widely used in the fields of electrical tools, railway trains, lighting, fire prevention and military
鎘鎳圓柱密封堿性蓄電池具有內阻小,使用壽命長,耐過充過放電,自放電小,使用溫度范圍寬( - 20 + 40 ) 、可靠性高等特點,適用高倍率(大功率)放電使用,廣泛應用於電動工具、列尾電源、照明、消防、儀器儀表以及軍事領域。The unconfined compressive strength, shearing strength and permeabi lity of stabilized soils were tested in laboratory, the strength of contaminated composite soils sampled with different ph and soaped in corresponding ph were compared. the results from experiments indicate that there exists a certain relationship between the soft soil properties and the unconfined compressive of grouted soil. with the increase of water content, porosity ratio, degree of porosity, plasticity limit, liquid limit and liquid index, the compressive strength of cement - sodium silicate - stabilized soil decreases, while increases as the bulk weight and compressibility modulus
通過對水泥?水玻璃加固土的無側限抗壓強度試驗,以及用不同酸堿性水製成與養護的固結土所進行強度對比試驗,得出軟土的物理力學性質指標與加固土的抗壓強度之間存在一定的相關關系,即隨著含水量、孔隙比、孔隙度、液塑限及液性指數的增加,水泥?水玻璃加固土的抗壓強度相應地降低;而隨著原狀土的容重、壓縮模量的增加,水泥土的抗壓強度也隨之增加。Any of the products are up to the present domestic and overseas standard or over on the performance of appearance, polish, coating adhesive force, rigidity, alkali resistance, acid resistance, salt fog erode resistance, solvent resistance, boiling water resistance and climate resistance
所有產品在外觀、光澤、塗層附著力、硬度、耐堿性、耐酸性、耐鹽霧腐蝕性、耐溶劑性、耐沸水性、耐候性等性能方面均達到或超過現行國內外標準。Water quality - determination of total nitrogen - alkaline potassium persulfate digestion - uv spectro photometric method
水質總氮的測定堿性過硫酸鉀消解紫外分光光度法Strictly - controlled operating temperature, lower space velocity, atmospheric pressure and necessary pre - treatment of the feed oil containing much bnc would help lengthen the service cycle
在實際生產中,通過嚴格控制溫度變化,採用低空速及常壓,對含堿性氮化物較多的原料進行必要的預處理可以最大限度地延長催化劑運轉周期。The experimental results show that it is feasible with the aids of chemical change that could transfer non - electrochemical active base substances in oils to electrochemical active cu ( superscript 2 + ), and the method can meet with the demand to determination feasibility, repeatability and accuracy, it has the following advantages : high automatization, simple operation, short test time and suitable for determining oils on the site
研究結果表明,通過化學轉換將潤滑油中的堿性物質(電化學技術不可測量)轉換為銅離子(電化學可測量)來完成潤滑油總堿值的測定是可行的,並可以滿足測定時對于可行性、重復性和準確性的要求,還具有自動化程度高、操作簡單、測定時間短等優點,適合進行現場潤滑油測定。Total genetic diversity by shannon index was 0. 5240, mean genetic diversity within subpopulation was 0. 4437, genetic diversity within subpopulation accounted for 84. 67 % of ' total genetic diversity, and that among subpopulations accounts for 15. 33 %, that is 85 % of genetic variation within subpopulation, and 15 % among subpopulations
為了從更大尺度和更深層次上理解生態過渡性與遺傳變異過渡性的聯系,我們對該過渡帶的梭梭、堿蓬和叉毛蓬三種植物的遺傳變異進行了rapd分析。結果顯d 。 , 。分享友人