查询词典 organic

Organic pollution may cause dissolution and pyrite-stain of foraminiferal test. This can be attributed to the acid and reductive condition formed by over high organic content.

有机质污染在有孔虫特征上主要反映为壳体的溶蚀和黄铁矿化，这是由于过量的有机质导致介质的酸化和还原条件。

Song-hua river is one of the serious rivers in China polluted by organic materials,the main environmental trouble in Song-hua river is bio-pollution frim organic toxicant.

松花江是中国有机污染危害严重的河流之一。松花江的主要环境问题是有机毒物造成的生态污染危害。

The study of the long-term dynamic change of soil organic matter and its affecting factors of geoponic practices were important for a comprehensive management on soil fertility. In this paper, based on the soil fertilizer monitoring data in 1980 and 1999 at county level, household survey and statistics data, the dynamic change of soil organic matter content and its affecting factors by relevant agricultural practices in the past twenty years were analyzed comprehensively.

本文以河北省曲周县为例，采用1980年和1999年两次全县的土壤肥力监测以及农户调查数据和统计数据，系统分析了过去20年中土壤有机质的动态及其与之相关的农作管理方式的变化。

The study of the long-term dynamic change of soil organic matter and its affecting factors of geoponic practices were important for a comprehensive management on soil fertility. In this paper, based on the soil fertilizer monitoring data in 1980 and 1999 at county level, household survey and statistics data, the dynamic change of soil organic matter content and its affecting factors by relevant agricultural practices in the past twenty years were analyzed comprehensively.

本文以河北省曲周县为例，採用1980年和1999年两次全县的土壤肥力监测以及农户调查数据和统计数据，系统分析了过去20年中土壤有机质的动態及其与之相关的农作管理方式的变化。

In result, formic, acetic, methanesulfonic, oxalic, malonic, succinic and glutaric acids were detected notably. Formic, acetic and oxalic acids were the most abundant organic acids, and the sum of their concentrations averagely accounted for 89% of the total detected organic acids and 13% of the total anions, respectively.

结果表明，甲酸、乙酸、甲磺酸、乙二酸、丙二酸、丁二酸、戊二酸均有不同程度检出，一元有机酸中甲酸和乙酸在每场降水中均有检出；二元有机酸中，乙二酸和丁二酸检出率很高，其他有机酸检出率较低。

Combining with hydrocarbon generating section of organic matter of Wells Che 25, Gugu 2 and Caogu 101, it is concluded that the bad evaluation of target source rocks is due to the lower organic matter abundance.

结合车25井、孤古2井和草古101井有机质成烃剖面，认为造成研究区烃源条件差的原因是有机质丰度过低。

Root-derived organic carbon is composed of three compartments: root detritus, root eaudates and root symbionts, which represents a large important and potential C sink in forest ecosystems, The known responses of root derived organic carbon and heterotrophic microbes to elevated CO2 were reviewed. Overall, increases in root biomass, productivity, and exudation indicate an augmentation of C inputs into the soil via roots, although changes in root lifespan are still unclear and may modify this flux positively or negatively, Altogether, changes in root chemistry and morphology that may augment soil C storage under elevated CO2 include decreased N concentration and wider root diameter, Alternately, a shift in rooting depth upwards in the soil profile may increase average turnover rates of root detritus. Effects of CO2 concentration on C qualities of root exudates and root symbionts are the least understood components discussed here, Changes of soil heterotropic microbial activity and community under elevated CO2 still remained large uncertainties.

林木根源有机C包括根东通过根枯落物、根系分泌物和根共生菌周转3条途径向土壤输入的有机C，它是森林生态系统中一个重要的、潜在的C汇，综述了根源有机C与其微生物对CO2浓度升高的响应，虽然对根系寿命的变化尚不清楚，但CO2浓度升高将导致根系生物量、生产量、死亡量和分泌物的增加；同时，CO2升高亦促使根共生菌生物量的增加而增加了共生菌的C归还潜力，表明CO2升高使根源有机C的输入增加了，CO2农度升高情况下，根系化学性质和形态特征的这些变化均有利于增加土壤C的吸存；而根分布深度的降低则对土壤C吸存不利；CO2浓度升高对根分泌物和根共生菌质量的影响研究则极少，CO2浓度升高下土壤微生物活性和群落组成的变化存在较大的不确定性，目前CO2浓度升高下林木根源有机C对森林长期C吸存的贡献仍很不清楚。

Hexene ; hydroformylation ; rhodium ; supported catalyst ; organic phosphine ; organic-inorganic hybrid

己烯；氢甲酰化；铑；负载型催化剂；有机膦；有机-无机杂化

In the absence of organic solvent and phase-transfer reagent, the catalytic oxidation of cyclo- hexene to adipic acid with aqueous 30% hydrogen peroxide can be achieved in the presence of tungstic acid/acidic organic additive.

以钨酸/有机酸性添加剂为催化体系，在无有机溶剂、相转移剂的情况下，催化 30%过氧化氢氧化环己烯合成己二酸。当钨酸∶有机酸性添加剂∶环己烯∶过氧化氢=1∶1∶40∶176(摩尔比，钨酸用量为 2.5 mmol)时，使用有机酸性添加剂考察钨酸的催化性能，结果表明以钨酸/间苯二酚催化氧化环己烯的催化效果最优，反应 8 h 时己二酸分离产率达 90.9%、纯度为～100%；而不使用有机酸性添加剂时，己二酸分离产率只有 72.1%，产品纯度为 96.2%。

The organic/inorganic composites, as new materials that combine the inorganic phase"s rigidity,stability and the organic phase"s toughness and workability, have important theoretical and realisticsignificance in materials science. C_(60) is a brand-new holosymmetry spherical molecule with theunique physical and chemical property, displaying wide implications and applications of physics,chemistry, biology, materials science, medicine, electronics, and so on.

有机／无机复合材料集无机相的刚性、稳定性和有机相的韧性、加工性等诸多特性于一体的一类新型材料，具有重要的理论和现实意义。C_(60)是一个全新的全对称球形分子，具有独特的物理、化学性能，已广泛地影响和应用到物理、化学、生物学、材料学、医学、电子学等许多领域。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。