nitrate 硝酸基(0)   相似匹配句对      Suleonazole Nitrate      KD-042 硫康唑硝酸盐 短句来源      Butoconazole Nitrate      ND-045布康唑硝酸盐 短句来源      PREPARATION OF STRONTIUM NITRATE(AR)      分析纯硝酸锶的研制 短句来源      (3) Nitrate reduction test.      (3)硝酸盐还原试验 ; 短句来源 查询“nitrate)”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   nitrate Study on eruption of heat for Escherichia coli B aroused by lanthanum nitrate and its mechanism 例句来源       Biological effect of rare-earth lanthanum nitrate on the growth of Escherichia coli B was studied using the calorimetric method. 例句来源       There were exceptional changes on the growth thermogenic curves for high concentrations of lanthanum nitrate. 例句来源       When the concentration of lanthanum nitrate was at 300 mg/L and 500 mg/L, and Q of the cultures reached 3.89 and 2.54 times of normal cultures, respectively. 例句来源       Nanometer MgO was prepared via a sol-gel auto-combustion technique using magnesium nitrate as raw material and citric acid as chelating agent. 例句来源       更多                    A.The Soils Since the goological formation of this mountainous area is quite uniform,a vertical distribution of soils is obviously observed. At the top of the mountain with an elevation of 8,500 feet,the podzolic soil is found. The process of podzolization is clearly shown by the translocation of clays,organic matter, and active aluminum from an upper to lower layer.The gray brown podzolic soil is distributed in areas ranging from 7,000 to 8,500 feet in elevation.It is developed under forest and has ...             1945年10月中旬,作者留印三月另一周,曾作三次野外调查,计包括印缅边区、恒河平原及喜马拉雅山东南麓等三区,茲先将大吉岭区调查结果,草成此文。调查区域大吉岭位于喜马拉雅山东南麓,在我国西藏边境,全区是山地,海拔自1000到9000尺不等,主为酸性的片麻岩地层,在拔海6500尺地点,年平均气温为56.3℉.,年雨量为122寸。土壤灰壤——灰棕壤组合:在拔海8500尺左右的山顶,灰壤见于草地上,而灰棕壤则发育在森林之下。灰棕壤——灰化黄壤组合:在拔海7000—8000尺地带,森林下仍是灰棕壤,而草地上则为灰化黄壤。灰化黄壤——粗骨土组合:在拔海1000—3000尺地带,片麻岩生成灰化红壤,酸性砂岩生成砾质土。全区土壤特征可归纳如下: (1)土壤 pH 值:全区因土壤母质为酸性片麻岩,各类土壤剖面亦为酸性反应;pH 值约自4.0至5.5。A_1层之 pH 值恒较 B 层为大,而土壤剖面内之 A 层及 B 层均较母岩之酸度为高。 (2)土壤有机质:从土壤有机质分析结果观之,显示植物种类对于土壤有机质之含量高低,有密切的关系,在拔海8500尺之地带,发育于森林下的灰棕壤,表土含有机质38.92%,而同处草类和蕨类植物... 文摘来源          In view of the necessity of a rapid and accurate process for the deter-mination of fluorine applicable in the analysis of sodium fluoride and otherfluorine compounds,the author has established a new volumetric processconsisting in the titration in aqueous-alcoholic medium with ferric nitrate asstandard solution and sodium salicylate as indicator.All of the methods,published by Guyot,Greeff,Fairchild andVisintin proposed for the determination of fluorine using ferric solutionas standard,are based on th...             本文介绍一容量分析氟的新方法和在工业制品上的应用,并分析了一种工业制备的氟化钠液,所得的结果和氟氯化铅法所得的极为一致。对于影响该分析法准确度的各种因素:指示剂的灵敏度和滴定时适宜的用量、溶液的 pH 值、应加的乙醇量、操作中加乙醇的次序、以及氟离子的适宜浓度,均加以研究并找出适宜的情况。本法用硝酸铁为标准液,水杨酸钠作指示剂,在 pH=3左右作滴定;当溶液呈橙黄色时,加入适量的乙醇,使其浓度在终点时仍不低于50%。如有干扰物质如二价及多价金属离子、磷酸根、矽酸根、硼酸根、碳酸根、硫化物和还原物质可能与三价铁起作用者,均应分离之。 文摘来源          1. The oil from fruits of Chinese drug,"Ya-tan-tze", Brucea javanica(Linn.) Merr., has been studied, and its physical and chemical constants determined. The composition of fatty acids and unsaponifiable matter were also individually identified. 2. The composition of fatty acids was fractionated by a specially modified method of fractional precipitation with silver nitrate solution, while the unsaturated fatty acids were fractionated with bromo-derivative method. The percentage contents of the various ...             此部分工作是作者於1942年在昆明前中央藥物研究所完成,近閱1950年中華醫學雜誌有于光元及李寶實两氏,又1955年中華耳鼻喉科雜誌有王世勳、陳守毅兩氏相继發表的关於鴉胆子固定油具有醫疗乳头瘤或及外耳道和喉乳頭狀瘤之臨床效能报告,为配合此方面研究與决定有效成分問题的發展,作者謹將此文發表。根據本研究,這植物果實固定油成分中含种類繁複的脂酸類和特異的高碳烃及(石享)類等化合物。這似與近年Grabtree及Patter等氏報導關於有機不飽和酸類抑制瘤腫作用有关,(Cancer Research,2:688,1942;4:688,1944:5:546,1945)頗足为探研鴉膽子油治瘤有效成分的参考。 文摘来源   << 更多相关文摘         相关查询:  对查询结果不满意

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