查询词典 sulfur

The average relativeerror was 3.63%, less much than mostly used group-contribution methods for alkyne, chlorine derivative, iodine derivative, especially for alkane, bromine derivative, aromatic hydrocarbon, alicyclic hydrocarbon and sulfur-containing organic compounds.

对4068种有机物的正常沸点进行了估算，其平均相对误差为3.63%，总体估算精度明显优于相比较的基团贡献法，对炔烃、氯衍生物、碘衍生物，尤其是对烷烃类、溴衍生物、芳烃、脂环烃和含硫化合物的估算误差明显减小。

Study was carried out on effects of applying sulfur on alkali soil pH in Tobacco Plating field.

土壤酸碱度是影响土壤养分、形态和有效性的主要因素之一；pH值过高或过低影响矿质元素的吸收，从而影响烟株体内代谢过程，推迟烟株的生长发育[1-6]。

Changes to FCC gasoline cutpoints and the possibility of blending by dilution (adding components such as ethers or alkylate) can be used to meet a sulfur or olefin specification for individual gasoline grades if a preliminary blend is already close to the specification and the refinery desires to increase total gasoline production.

对FCC 汽油cutpoints 的变动和混和的可能性由稀释(增加组分譬如以太或烷基化)可能使用符合各自的汽油等级的硫磺或烯烃规格如果初步混合已经是紧挨规格和精炼厂渴望增加总汽油生产。

When the mol quantity of Cu2+ dissolved was 5% of those of AlCl3 in ionic liquids, alkylation results from ionic liquids is comparable with those obtained with concentrated sulfur acid: the yield of alkylate reaching 178% of the volume of butene inputted, the selectivity of C8 reaching 75% and the octane number of alkylate reaching 92.2.

溶入Cu2+和Cu+后，离子液体的催化性能有显著的改善，当Cu2+的摩尔加入量为三氯化铝的5%时，烷基化油收率达到丁烯体积的178%，对C8的选择性为75%，烷基化油辛烷值为92.2，并且离子液体可以重复使用。

A toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable gray metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores.

有毒的非金属元素，有多种同素异形体，稳定且有金属特性的灰色同素异形体用于光电池，其在亮处的导电性比在暗处好，见于硫化物矿石中。注意，注意力集中

A toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable grey metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores as pyrite

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No coexisting liquid-and gas-rich fluid inclusions were found during quartz petrogaghy microscope observation, the lack of acid hydrothermal alteration mineral assemblages (e. g., alunite, kaolinite, barite, and anhydrite, etc), the measured bulk gas component data of pyrite-and quartz-bearing fluid inclusions distributed cluster on the volatile-temperature diagram, the similarities of the aqueous geochemical compositions among individual low-salinity fluid inclusion decrepited pits detected by SAM/AES and the sulfur isotope profile of a sirngle pyrite stain smoothly changed implied that the ore-forming fluid phase seperation didn′t, contribute significantly to Duolanashayi gold deposit

石英显微观察未发现有共存的富气相和富液相流体包裹体、金矿床明显缺乏原生酸性蚀变组合(如明矾石、重晶石及硬石膏等)、黄铁矿及石英所含流体包裹体实测结果在气相组成-温度相关图上分布较为集中，黄铁矿所含单个低盐度流体包嘉体液相组成俄歇电子能谱分析结果差别不大以及单颗粒黄铁矿硫同位素离子探针线扫描结果变化不明显等宏观与微观地质特征均说明流体相分离对形成多拉纳萨依金矿床的贡献不大

Moreover, the high sulfur vapor pressure will result in the explosion of the quartz ampoule.

而且，硫族元素高的蒸气压会导致石英安瓿爆炸。

The platform of diffraction data collection and analysis for protein crystalAccording to the characteristics of Hefei Light Source,based on the XRDS Station in NSRL at USTC,the experiment platform was set up for measuring sulfur anomalous scattering signal with long-wavelength X-ray.

蛋白质晶体衍射数据采集及数据分析的平台根据合肥光源的特点，依托中国科学技术大学国家同步辐射实验室X射线衍射与散射实验站，搭建了适于测量硫元素反常散射信号的长波长X射线衍射实验平台。

Coal briquette is made of anthracite with a sulfur content of 3 14% by addition of limeand hydrocarbons.

在含硫量为 3 14%的无烟煤中添加石灰及少量碳氢化合物，制作成型煤。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。