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浓度的
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  concentration
     Study on Fluorescence Measurement for Algae Chlorophyll-a Concentration with Optical Fiber
     光纤式海藻叶绿素a浓度的荧光测量理论与实验研究
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     Studies on Maximum Permissible Concentration of Crude Sulfonated Phenanthrene in Surface Water
     地面水中磺化粗菲最大容许浓度的研究
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     Thermodynamic Calculation of the Nitrogen Concentration in GaP
     磷化镓晶体掺氮浓度的热力学计算
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     Effects of chromium ion concentration on the threshold and output energy of dye Q-switehed ruby lasers
     染料调Q红宝石激光器阈值及输出能量与铬离子浓度的关系
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     A THEORETICAL ANALYSIS OF REMOTEMEASUREMENT OF MASS CONCENTRATION OFATMOSPHERIC DUST USING LIDAR
     激光遥测大气尘埃质量浓度的理论分析
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  concentrations
     Acute Phase Proteins: AntithrombinⅢ, Plasma Fibronectin, Transthyretin and Albumin, Their Locations in Amphioxus and the Changes of Their Concentrations after Treatment with LPS
     急性时相蛋白:抗凝血酶Ⅲ、血浆纤连蛋白、前白蛋白和白蛋白在文昌鱼中的组织定位以及LPS处理后浓度的变化
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     FAILURE OF SPERMATOGENESIS AND CHANGES IN LIVER IRON,ZINC AND MANGANESE CONCENTRATIONS CAUSED BY DIETHYLENETRIAMINEPENTAACETATE IN MICE
     二乙三胺五醋酸对小鼠的灭精作用及其对肝铁、锌、锰浓度的影响
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     CLASSIFICATION OF 34 ESSENTIAL HYPERTENSIVE PATIENTS ACCORDNING TO TRADITIONAL CHINESE MEDICINE AND THEIR CORRELATION WITH PLASMA ANGIOTENSIN Ⅱ CONCENTRATIONS
     34例原发性高血压病中医辨证分型与血浆中血管紧张素Ⅱ浓度的关系
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     THE EFFECT ON UPTAKE AND LOSS OF ~(60)CO OF VARIOUS CONCENTRATIONS BY TWO MARINE UNICELLULAR ALGAE
     两种单胞藻类对不同浓度的~(60)Co吸收和排出的影响
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     A REVIEW OF A MAXIMUM PERMISSIBLE CONCENTRATIONS FOR ~(222)Rn AND IT'S DAUGHTERS IN RADIATION PROTECTION STANDARD GBJ8-74
     关于制订我国放射防护规定(GBJ8-74)中氡-222最大容许浓度的回顾
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     The Changes of Plasma TXB_2 and 6-k-PGF_(1α) in Patients with Salt-sensitive Essential Hypertension and Survey of the Distribution of Different Types of Hypertension and Blood Lipids Disorders in Elderly Patients with Acute Myocardial Infarction
     盐敏感性高血压病患者血浆TXB_2、6-k-PGF_(1α)浓度的变化以及不同类型高血压和血脂异常在老年急性心肌梗死患者中的分布
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     Equilibrium Distributions of the Potential and of the Carrier in the Inversion Layer
     反型层中电位与载流子浓度的平衡分布
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     The Determination of Ionized Calcium in Human Bile with Calcium Ion Selective Electrode
     钙离子选择电极对人体胆汁中钙离子浓度的测定
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     TRHODOTHYRONINE THYROTOXICOSIS--AN ANALYSIS OF LEVELS OF SERUM THYROID HORMONES IN 32 CASES
     T_3甲状腺毒症——32例病人血清甲状腺激素浓度的分析
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     Determination of Higher-concentration of Nickel and Zinc in Ni-Zn Electroplating by Atomic Absorption Spectrophotometry
     原子吸收光谱法测定Ni-Zn电镀中较高浓度的镍和锌
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  concentration
More generally, these results apply both to Gabor frames and to systems of Gabor molecules, whose elements share only a common envelope of concentration in the time-frequency plane.
      
aureus in lower concentration of chloroform extract.
      
Transfersomal formulation with optimal concentration of Soya phosphatidylcholine (SPC) and sodium deoxycholate (85:15 w/w) showed entrapment efficiency of 39.8±0.032 and deformability index of 16.4.
      
None of the synthesized compounds appear to be more potent than 1 at a concentration of 10 μM.
      
Only two of the evaluated compounds (2 and 8) appeared to be allosteric enhancers at high concentration (10 μM).
      
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  concentrations
The α-isomer exhibited rapid and significantly higher peak plasma concentrations in all the species post intramuscular administrations, while β-isomer showed prolonged plasma levels.
      
None of the new compounds showed affinity for 5-HT2A and 5-HT2C subtypes, but some of them displayed antagonistic activity in rat stomach fundus at micromolar concentrations.
      
Seven compounds caused 50% growth inhibition (GI50) of tumor cells at concentrations of >amp;lt;100 μM while the remaining ten were not cytotoxic.
      
Two of the synthesized compounds proved to be effective in inhibiting HIV-1 replication at micromolar concentrations.
      
Serum VEGF concentrations were significantly higher in the diabetic groups than in the control group even at the normoalbuminuric stage.
      
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Infolge der Fernwirkungen der Oberflachenzirkulation des Indischen Ozeans berwiegt also im Suezkanal in den 9 Monaten Oktober/Juni ein Wassertransport nach Norden vom Golf von Suez zum Mittelmeer, wobei am Kanalboden mehr oder minder weitreichende rucklaufige Bewegungen auftreten, die von der Salzanreicherung des Grossen Bittersees ausgehen. Im Vierteljahr Juli/September setzt sich bei ausgeglichenen Niveauverhaltnissen der Einfluss der vorherrschenden Nordwind durch und bewirkt einen Sudstrom, der zwar im nordlichen...

Infolge der Fernwirkungen der Oberflachenzirkulation des Indischen Ozeans berwiegt also im Suezkanal in den 9 Monaten Oktober/Juni ein Wassertransport nach Norden vom Golf von Suez zum Mittelmeer, wobei am Kanalboden mehr oder minder weitreichende rucklaufige Bewegungen auftreten, die von der Salzanreicherung des Grossen Bittersees ausgehen. Im Vierteljahr Juli/September setzt sich bei ausgeglichenen Niveauverhaltnissen der Einfluss der vorherrschenden Nordwind durch und bewirkt einen Sudstrom, der zwar im nordlichen Teile des Kanals nicht die ganze Wassersaule erfasst und hier offenbar von einem salzreichen, nach Norden gerichteten Bodenstrom unter lagert wird. (John Lee)

海水盐分之浓度,在各大洋中,平均皆在35‰上下,惟红海以地理关系,盐分特高,几达40‰,在红海湾内,且达43‰,然此尚不算大,苏彝士运河内之盐分,竟高至56‰,大概为世界盐分最高之海道矣。苏彝士运河盐分所以如此之高,盖因其中部有大苦湖,湖底积有盐层之故。但自运河开凿后,因海水之流通,运河盐分已在逐年减低(水面盐分平均每年减低0.18‰,大苦湖底每年约减低0.30‰),而大苦湖底之盐层亦渐次溶消矣。

1.Homo-ionic colloidal clays (Mg-clay>H-clay>Be-clay>NH4-clay>K-clay>Na-clay. 3.The collcidal clays from yellow earth having lower SiO_2/R_2O_3 ratios fix more phosphate than that from purple brown...

1.Homo-ionic colloidal clays (Mg-clay>H-clay>Be-clay>NH4-clay>K-clay>Na-clay. 3.The collcidal clays from yellow earth having lower SiO_2/R_2O_3 ratios fix more phosphate than that from purple brown soil. 4.The phosphate fixation power of H-clay is markedly reduced after the removal of free irn and aluminum oxides. 5.In Ca-clay,the fixed phosphate was unstable.The association of phosphate with the exchangeable calcium is easily liberated by a very dilute acid solution.

土壤中磷酸固定作用每受外界环境之影响而有很大差异,如粘土矿物的种类,土壤反应,代换性盐基等,黏土矿物与土壤反应对于磷酸固定前,人已有较详细之报告,本文特重视代换性盐基之种类对于磷酸固定之关系。本试验以紫色土与黄壤为代表,均取于北碚。紫色土系发育于白垩纪自流井层紫色页岩,属中性而无石灰性反应,pH=7.0,黄壤系自侏罗纪灰色砂岩风化者,心土微红,pH=4.5—5.0,为避免过高之有机质,均采取心土,按照 Stoke 氏定律提取5微米(micron)直径之黏土粒,晒干后,分别以 N NaCl,N KGl,N NH_4Cl,N MgCl_2,N BaCl_2及 pH=3 HCl 处理,然后再以90%酒精洗涤至无氯为止,总之以不变更胶体之构造为原则,经处理之黏土,先分析其中之代换性盐基以及盐基代换总量,然后再测定其磷酸固定量,在酸性反应如 H~-黏土,其磷酸固定之主要因子为水化铁及水化铝,故再以 pH=2之盐酸淋洗,除去其中游离铁铝,再测定其磷酸固定量以资比较。按分析结果,黄壤胶体(<2 micron)中之(SiO_2)/(R_2O_3)为2.19,紫色土为2.56,前者盐基代换总量每百克黏土粒(<5 micron)...

土壤中磷酸固定作用每受外界环境之影响而有很大差异,如粘土矿物的种类,土壤反应,代换性盐基等,黏土矿物与土壤反应对于磷酸固定前,人已有较详细之报告,本文特重视代换性盐基之种类对于磷酸固定之关系。本试验以紫色土与黄壤为代表,均取于北碚。紫色土系发育于白垩纪自流井层紫色页岩,属中性而无石灰性反应,pH=7.0,黄壤系自侏罗纪灰色砂岩风化者,心土微红,pH=4.5—5.0,为避免过高之有机质,均采取心土,按照 Stoke 氏定律提取5微米(micron)直径之黏土粒,晒干后,分别以 N NaCl,N KGl,N NH_4Cl,N MgCl_2,N BaCl_2及 pH=3 HCl 处理,然后再以90%酒精洗涤至无氯为止,总之以不变更胶体之构造为原则,经处理之黏土,先分析其中之代换性盐基以及盐基代换总量,然后再测定其磷酸固定量,在酸性反应如 H~-黏土,其磷酸固定之主要因子为水化铁及水化铝,故再以 pH=2之盐酸淋洗,除去其中游离铁铝,再测定其磷酸固定量以资比较。按分析结果,黄壤胶体(<2 micron)中之(SiO_2)/(R_2O_3)为2.19,紫色土为2.56,前者盐基代换总量每百克黏土粒(<5 micron)为18m.e.后背为30m.e.,兹将试验所得结果归纳如次: 1.磷酸固定量每因土壤胶体之不同而有差异,由黄壤所提取之黏土其磷酸固定量亦较紫色土为高。 2.土壤之磷酸固定量,非特因土壤胶体之不同而有差异,即或同一黏土,其磷酸固定量亦因其代换性盐基之不同而有差异,概言之,钠黏土之磷酸固定量为最小,钾黏土次之钡、铵黏土又次之,而以钙黏土为最大,其磷酸固定次序为: Ca-黏土>Mg-黏土>H-黏土>B(?)-黏土>NH_4-黏土>K-黏土>Na 黏土 3.各种不同代换性盐基的粘土,加磷酸溶液后,其反应亦各不相同,H~-黏土之 pH 值为3.2—4.5,因其酸度较高,溶液中之游离铁与游离铝含量较多,是故磷酸固定量亦较高,如以淡盐酸(pH=2)洗涤,除去其中游离铁铝后,其磷酸固定量则大为减少,Na~-黏土与 K~-粘土之溶液中,因 OH 离子较多(pH=8.0—8.6),而磷酸钠与磷酸钾又为水溶性,故磷酸固定量为最少。Ca~-粘土与 Mg-粘土其反应属中性至微碱性,pH=7.5—8.0,因溶液中 Ca,Mg 离子浓度较高,磷酸则为此 Ca,Mg离子所固定,故在中性土壤中,磷酸固定以 Ca 为其主要在子,酸性土壤则以水化铁为其主要因子。 4.钙粘土所固定之磷酸,如以0.002 N H_2SO_4提取,其所固定之磷酸复可溶解,是项固定之磷酸与 Heck 所称「暂时固定磷酸」颇为相似。

Conductivity measurements of the hydrochloride of aniline, methyl aniline and ethyl aniline in water aud in dioxane-water mixtures have been made at 25℃, by using a Jones Bridge. Measurements of conductances at 25℃ of these salts have been made in concentrations ranging from 0.1 normal to 0.001 normal, using water and numerous dioxane-water mixtures as solvents. The conductivities of these salts in water and some dioxane-water mixtures with excess free bases have also been measured. The hydrolysis constants...

Conductivity measurements of the hydrochloride of aniline, methyl aniline and ethyl aniline in water aud in dioxane-water mixtures have been made at 25℃, by using a Jones Bridge. Measurements of conductances at 25℃ of these salts have been made in concentrations ranging from 0.1 normal to 0.001 normal, using water and numerous dioxane-water mixtures as solvents. The conductivities of these salts in water and some dioxane-water mixtures with excess free bases have also been measured. The hydrolysis constants of these salts and the ionizatioa constants of these amines have been calculated from the conductivity measurements. The results are: K_h K_b Aniline hydrochloride 2.7 × 10~(-5) 4. 5 × 10~(-10) Methyl aniline hydrochloride 2.6 × 10~(-5) 4. 6 × 10~(-10) Ethyl aniline hydrochloride 1.1 × 10~(-5) 10. 6 × 10~(-10) A discussion of the effect of dielectric constant upon conductivities has been included. Calculations of the equivalent conductivities of these salts have been made and discussed. The equivalent conducfivities at infinite dilution at 25℃ are: Aniline hydrochloride 166 mho Methyl aniline hydrochloride 161 mho Ethyl aniline hydrochloride 152.5 mho

1. 作者在25℃時,用Jones電導橋测量氫氯化苯胺、N甲基苯胺及N乙基苯胺在水與水及二氧六圜的混合液裏的電導。這些氫氯化物的濃度為0.1,0.02,0.01, 及0.001 N。至於混合液中二氧六圜的成份,則爲每100毫升溶液內含有10,15,20,25,30,35,40,45,50,55,60,65,70,75,80,85,90等毫升。 2.含有過量苯胺類的這些氫氯化苯胺類的水溶液、以及水與二氧六圜的混合液中,也作了電導測定。 3.這些氫氯化物的水解分數、水解常數和這些苯胺的電離常數也作了計算和比較。 4.關於電導和介電常數的關係,在本文中曾爲簡單的討論。 5.這些氫氯化物的無限稀釋時的當量電導,在本文中也作了計算,並與文献中能查到的數據作了比較。

 
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