1) chemical composition
化学组成
1.
Analysis of chemical composition of filter cake for full Kaolin FCC catalysts;
全白土型催化裂化催化剂滤饼化学组成分析
2.
The biological nature and chemical composition of Solidago canadesis;
加拿大一枝黄花制浆研究(系列报道之一) 生物特性与化学组成
3.
The chemical composition of marine aerosol over Zhongshan Station in Antarctica and its sources discrimination in 1998;
1998年南极中山站海洋气溶胶的化学组成及其来源判别
2) chemical component
化学组成
1.
Analysis of chemical component of biomass-based tar by GC/MS;
GC/MS法分析生物质焦油的化学组成
2.
Study on characteristics of chemical component and agrochemistry behavior of slog containing silicon;
含硅熔渣的化学组成特征与农业化学行为研究
3.
The changing characteristics and chemical components and origin of acid rain in Xiangtan urban area are analyzed according monitoring data of precipitation quality from 2001 to 2005.
根据2001~2005年湘潭市城区降水环境质量监测数据,对湘潭城区酸性降水的变化特征、离子化学组成、变化趋势和酸雨成因进行了分析。
3) chemical compositions
化学组成
1.
Growth characteristics and chemical compositions of Phaeodactylum tricornutum under different nitrogen concentrations;
不同氮浓度下三角褐指藻生长特性和化学组成(英文)
2.
Study on chemical compositions and fiber characteristics of imported instrustry conifers;
对外引工业用针叶树种木材化学组成与纤维形态的研究
3.
The chemical compositions,fiber morphology and physical pulping characteristics of Broussonetia papyrifera bark produced in dry-hot valley of the Jinshajiang River were analyzed.
对金沙江干热河谷区构树韧皮纤维的化学组成、纤维形态和成浆物理性能进行了分析,结果表明:构树韧皮的木素含量低,纤维素含量较高,达43。
4) Composition
[英][,kɔmpə'zɪʃn] [美]['kɑmpə'zɪʃən]
化学组成
1.
The composition of heat curable vacuum-impregnators,particularly in the fields of methacrylate impregnation sealants,their ingredients and recent technical development were briefly discussed in this paper.
特别介绍了其中甲基丙烯酸酯型浸渗剂的有关化学组成及其技术发展的现状。
2.
The influence of composition was investigated on performance of the monolithic catalysts prepared by impregnation on wash-coated monolithic support.
利用改性Al2O3涂层浸渍负载活性组分制备整体式催化剂,重点考察化学组成对整体式催化剂性能的影响。
3.
The reaction distillate from synthesis of geranylacetone was analyzed through GC and GCMS to investigate its composition as well as reformation mechanism.
通过GC和GC MS,研究了香叶基丙酮合成反应过程中馏出物的主要化学组成及其特征。
5) chemical constituents
化学组成
1.
The CS 2 soluble fractions from Pingshuo, Datong and Shenfu bituminous coals were analyzed using GC/MS and their chemical constituents and structural characteristic were studied.
利用气相色谱 质谱联用 (GC MS)技术测定了平朔、大同和神府三种烟煤中CS2 萃取物的成分 ,对其化学组成及结构特征进行了对比研究。
2.
This paper introduces the application,chemical constituents,extraction processes and determination methods for active components of honeysuckle flower,and provides the scientific basis for further study.
系统介绍金银花的应用开发、化学组成以及有效成分的提取工艺和测定方法 ,为今后的深入研究提供科学的依
3.
The chemical constituents of the seeds in Sophora viciifolia Hance.
)种子的化学组成,测定了纤维素、粗脂肪、粗蛋白、淀粉、苦参碱相对于绝干狼牙刺种子的质量分数。
6) chemical group composition
化学族组成
1.
A new idea is brought forward to study coal chemical group composition by the coal unfreezing technology.
综述了煤可溶化技术研究的现状 ,讨论了影响煤可溶化的主要因素以及几种强化方法 ,指出了今后应作深入研究的几个方面 ,并提出了利用煤的可溶化技术进行煤的化学族组成研究的设想。
2.
Based on the determinations of simulated distillation by GC and chemical group composition by GC-MS,some experimental studies on inherent nature were car.
并基于色谱模拟蒸馏和质谱化学族组成对其内在性质进行了实验研究,发现该国外加氢油在内在质量上的优势体现在:馏程窄且轻重组分分布均匀,化学族组成中链烷烃含量高。
补充资料：海水的化学组成
海水的化学组成
chemical composition of sea water
haishui de huaxue zueheng海水的化学组成(chemieal eomnosition of Sea water)海水是一个多组分、多相的复杂体系，除水以外，还包括占溶解成分99.9%以上的n种主要成分、众多的微量和痕量元素、营养盐、有机物、溶存气体以及悬浮于海水中的颗粒物质。 迄今，海水中已有92种自然界存在的元素被测定或检出，下表列出了其中80种元素的名称、海水中的浓度、溶解态主要赋存形式以及它们在海洋中的总量;尽管世界各大洋不同海域以及不同深度的海水样品，其组成及赋存形式稍有差别，但一般差别不大。表中所示系海水中各类元素的平均丰度。必须指出的是，随着分析技术的进步，还有可能在海水中继续发现自然界存在的其他元素。 海水中化学元素的平均丰度元素、篆卜)某豁瞥瞿;黑) 氯CI 1 .95又1了CI一2.57火10‘6 钠Na 1 .077火l护Na+1 .42xlo‘6镁Mg 1 .290 x 103M扩+171 x 10，，硫59，肠冰102 5042一，NasO4一1 .2xlo‘5钙Ca 4.12xl02C扩+5，45xlol4 钾K 3.80只1护K+5.02只10‘4浪Br 67 Br一5 .56火10‘3碳e 28毗O3’，e诱一，cOZ 3.7火10，3氮Nl一5姚气体，NOs- Nll4 1 .5 x 10，3 锯Sr 85产+l，06x1013 氧06仇气体7.93 x 10‘2硼B4阵B(OH)3，B(OH)不，5 .sZxlo，2 姚B氏硅51 2 51(OH)4 2 64 x 10，2氟r一3F一，MgF+一72 x 10‘2 氢击0.43Ar气体5.68x10“ 锉Li O.18L+2.38xlOll 钞n Bb 0.12Rb+1.59xl0，‘磷P 6xlo一2即碳一，呵一，H2PO’-793Klo‘o碘16只10一21饵，I一7 .93只10‘o钡BaZ只10一2 BaZ+2.64xlo‘o铝Mo 1 x 10一2 Mo碳一1 .32 x 10，o砷A:3 .7只10一3HAs护一，践丛咙4，89只1护铀u 32xlo一3u仇(eO3)盆一423xl护钒vZ石K 10一3 HZv氏，柳碳一3.31 xx护钦Ti lxlo一3肠(OH)4 1.32x109锌肠5 x 10一4 znoH+，Zn2十，zneO3 6.61 x 108镍Ni 4.8只10一“NiZ+，NICO3，NICI十6，35 x 108 铝A14只10一4A-l(OH)不5 .29xl08 艳C。
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参考词条