查询词典 sulfur

The poisoning effects of alkyl sulfur compounds on the reactivity of isoprene hydrogenation over supported Pd catalyst are more and more serious with the decrease of the molecular mass of alkyl thiols and dialkyl disulfides.

乙硫醇和二甲基二硫醚使Pd／树脂催化剂中毒的机理是，它们分别在催化剂上发生SH和S-S键断裂，并与Pd形成带烷基基团的S-Pd吸附络合物，致使催化剂上异戊二烯选择加氢活性降低。

Sulfur-containing compounds were found to be the principal components, of which the major compound was diallyl trisulfide with the content of more than 30%, which is higher than the others in the literature.

用峰面积归一化法对各物质的相对含量进行了测定，结果表明含硫化合物约占挥发油总成分的95%以上，其中含量最高的是大蒜新素，约占挥发油总量的三分之一。

Essential drugs for standard topical treatment drugs include metronidazole,azelaic acid, and sodium sulfacetamide-sulfur. second line drugs include dibenzoyl peroxide, benzoyl peroxide,clindamycin,calcineurin inhibitors,and permethrin.

局部治疗红斑痤疮的基本药物有：甲硝唑，壬二酸，复方硫磺制剂；二线药物包括：过氧化二苯甲酰，过氧苯甲酰，克林霉素，钙神经蛋白抑制剂以及扑灭司林等。

The practice shows that the organic matter content of compositive wastewater can be reduced from about 15000 mg/L to 4000~6000 mg/L by diffluent treating saline wastewater of high contaminant concentration and dispersed treating sulfur-included wastewater, in the result the possibility of finally releasing up to par is improved.

实践表明通过对光敏剂生产废水中高含盐废水的分流处理、含硫废水分散预处理，可以使综合废水的COD从15000mg／L左右下降到4000～6000mg/L左右，提高了废水末端处理达标排放的可行性。

It is seen that oxygen group function of additives is very remarkably in tribological characteristics, that is EP property of dihydroxy docosanoic acid without active element is very near to that of SO with active element sulfur.

双羟基廿二酸的极压性与不含氧基团的硫化烯烃十分接近，以液体石蜡为基础油，最大无卡咬负荷P〓值，前者为539N，后者为588N，再者相差49N，可以看出，氧基团的作用是十分显著的，即无活性元素的双羟基廿二酸的极压性可以十分接近于含活性元素的抗磨极压剂硫化烯烃。

As for sulfur isotopic composition, the general feature of two types deposits is a single peak distribution. All δ〓s values of the ores are near zero. The difference of different deposits lies in that the δ〓s values (1. 8-5. 2‰) of LDT are of small positive value and are similar to that of the metamorphic rocks and dioritic porphyrites in the region while the δ〓s values of SDT are always near zero. Features above suggest that two types of deposits have closely genetic relationship to metamorphic and magmatic rocks.

硫同位素组成上，两类金矿床共同的特征是均具有明显的单峰塔式效应，且δ〓S值均位于0值附近不大的变化范围内；不同的是，近程式金矿的δ〓S平均值均接近于0，与该类金矿具密切成因联系的岩体的δ〓S值也接近于0值，而远程式金矿的δ〓S平均值均为小的正值，变化范围为1.8～5.2‰，区内太古代变质岩及矿区内闪长玢岩脉的全岩δ〓S值位于这一区间内，反映了远程式金矿床其成矿物质不仅来源于重熔岩浆，同时还可能部分来源于变质岩围岩。

The strain TV9704 does not use dodecane,hexadecane,liquid paraffin,diesel and naphthalene as carbon source and energy for its growth,therefore the oil consumption value was not obviously decreased;comparatively,thiophene or dibenzothiophenewas the only carbon source,sulfur source and en...

这一菌株不能以正十二烷、正十六烷、液体石蜡、萘和柴油为碳源和能源生长，因此不会明显地损失石油的燃烧值；但它能利用噻吩或二苯并噻吩作为唯一硫源来生长。

The health effect observed following sulfur sulfate ingestion are laxative action, diarrhea and enterogastritis.

硫与硫酸根主要的健康效应是会造成食用者消化系统的不适语病变，包括下痢与肠胃炎。

Ethanethiol,thiophene and dibenzothiophene as the model sulfur compounds were analysed by FPD in the gasoline.

选择乙硫醇、噻吩和二苯并噻吩作为汽油中的目标检测硫化物，采用火焰光度检测器进行分析。

The catalysis effect of carbide lime , which is a residue in the ethyne production and has a good sulfur-retention property, on pulverized coal combustion has been studied on a thermogravimetric analyzer.

用热重法研究了不同条件下电石渣的催化煤燃烧特性，发现电石渣对晋城煤的着火温度和固定碳燃尽率都具有一定的促进作用，而且随添加量的增加助燃作用增强。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。