甲烷

The MSHA cited the Massey mine for hundreds of violations in recent years, including 10 so far this year related to legal requirements for ventilation systems to control methane and highly explosive coal dust.

MSHA称，Massey Energy Co。旗下的这座煤矿近年来发生过数百起违反矿山安全规程的事件，今年迄今为止就有10起违反煤矿通风系统要求的事情发生，这一系统旨在控制矿井内甲烷和高爆炸性煤尘的浓度。

The synthesis and application of several amino-alcohols from nitroalkanes and aldehydes were described.

介绍了甲醛与硝基甲烷反应合成几种氨基醇类的产品发展情况及其用途。

The invention relates to a kind of middle/high temperature heat pump refrigerant mixture containing trifluoroiodomethane (R13I1) and tetrafluoroethylene (HFC134a), which is suitable for using as the refrigerants for middle/high temperature heat pump system with a temperature of 60~120deg.C.

一种含有三氟碘甲烷(R13I1)和四氟乙烷(HFC134a)的中高温热泵混合工质，适合作为冷凝温度为60-120℃的中高温热泵系统的制冷剂。

According to the investigation of the concentration of THMS in drinking water in a city of china, a comprehensive review regarding effect of bromide ion on disinfection by-products during chlorination was presented, including occurrence of bromide ion, effect of bromide ion on the formation of THMS and HAAS, as well as mechanism for characterising the formation of THMS and THMS.

根据我国某城市饮用水中三卤甲烷类物质的现状，对水中Br-对THMS、卤代乙酸类物质形成的影响以及THMS、HAATHMS形成的机理等进行综述，具提出了控制饮用水氯化消毒副产物的相应对策。

The latter two coke depositions are believed to be the reason for the deactivation of the catalysts.

后二者被认为是甲烷无氧芳构化失活的主要原因。

Synthesis of polyester polyol of sebacic acid series;2. Study on catalyst used to synthesis of polyester polyol ;3. A series of polyester-based thermoplastic polyurethanes elastomer were prepared from polyester polyol ,diphenylmethane-4,4'-diisocyanate and 1,4-butanedio by one-step process.

以聚酯多元醇、4，4'-二苯基甲烷二异氰酸酯和1，4-丁二醇为原料制备了一系列聚酯型热塑性聚氨酯弹性体，对硬段含量、软段种类和软段的分子量等分子结构参数对其力学性能和阻尼性能的影响进行了研究，探索影响规律性，采用原子力显微镜对其软/硬段微相分离结构进行了研究。

At 823 K and /or lower temperature, methane could adsorb or even adsorb dissociatively over Mo, Pd-Ga, La-Zn, Ag, Cr and La-Zn loaded zeolites.

甲烷能够在773 K或者更低的温度下在Mo／HZSM-5、Pd-Ga／HZSM-5、Ag/HZSM-5、Cr／HZSM-5和La-Zn／HZSM-5负载的催化剂上实现吸附甚至活化吸附。

A seemingly ordinary rocket engine tests, but this is the special use of methane fuel.

看似一次普通的火箭发动机测试，不过特殊的是这次用的燃料是甲烷。

Fluorocarbons, with each gas weighted according to its heat trapping quality, in carbon dioxide equivalents and expressed in metric tons of carbon per capita.

指三种主要的温室气体（二氧化碳、甲烷和氟氯烃）的净排放量，每种气体都按其热吸附质能加权，折算成二氧化碳当量，并以人均碳公吨表示。

Certain gases in the atmosphere, mainly carbon dioxide, methane, nitrous oxide and fluorocarbons, act like the glass in a greenhouse, allowing sunlight through to heat the Earth's surface but trapping some of the heat as it radiates back into space.

在大气中，某些气体二氧化碳、甲烷为主的氧化亚氮和fluorocarbons，像玻璃在温室里，让阳光透过加热地球表面的热陷阱，但作为辐射回宇宙中。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。