無環烴 的英文怎麼說
中文拼音 [wúhuántīng]
無環烴
英文
acyclic hydrocarbons-
State general bureau of environmental protection approved the national standard of automobile - used unleaded petrol " in june of 1999. the standard is gb17930 - 1999. the index most difficult to reach is the content of olefin in this standard
國家環保總局於1999年6月批準發布了《車用無鉛汽油》國家標準gb17930 - 1999 ，該標準中最難達到的指標是烯烴含量。In 2005, 61 physical and chemical parameters were measured and analysed in sediments. these included particle size, electrochemical potential as highly anoxic sediment with negative potential is related to organic pollution, chemical oxygen demand which indicates organic pollutants, total sulphide inorganic constituents, source of the unpleasant - smelling gas hydrogen sulphide, 15 metals and metalloids aluminium, arsenic, barium, boron, cadmium, chromium, copper, iron, lead, manganese, mercury, nickel, silver, vanadium and zinc, and trace toxic organics pahs and pcbs - 16 compounds and 18 congeners respectively
2005年，沉積物監測包括分析61種物理及化學參數，其中有粒子大小電化學勢有機污染促使沉積物缺氧，而讓電化學勢呈負數值化學需氧量顯示有機污染程度總硫化物無機物，是造成難聞氣體硫化氫的主因15種金屬及準金屬鋁砷鋇硼鎘鉻銅鐵鉛錳汞鎳銀釩及鋅和痕量毒性有機物多環芳烴及多氯聯苯分別為16種復合物及18種同質物。A variety of artificial receptor molecules, such as cyclodextrin ( cd ), crown ethers, calixarenes and porphyrin, as typical host compounds, have attracted enormous research interest in their molecular recognition. among them, cds having an interior hydrophobic cavity and an exterior hydrophilic environment, as a buildup element of second generation supramolecule, can accommodate many organic, inorganic and biological molecules in their toroidal cavity to form stable host - guest inclusion complexes. therefore, they have been paid much attention by the researchers of supramolecular chemistry
在已報道的多種人工超分子主體物質中，以冠醚、環糊精（ cyclodextrin ，簡稱為cd ） 、杯芳烴及卟啉（ porphyrin ）為主體的分子識別研究引起了人們的廣泛關注，其中環糊精（ cd ）作為第二代超分子的構築體，其內腔疏水而外部親水，可以與許多有機、無機和生物分子形成包合物，從而成為超分子化學工作者感興趣的研究對象。Effects of soil organic and inorganic fractions on the fate and behavior of polycyclic aromatic hydrocarbons in soil environment
土壤有機和無機組分對多環芳烴環境行為影響的研究進展分享友人