硫

objective:to determine glucosinolates in draba nemorosa var.leiocarpa and provide the basic and science data for further development.methods:sulfate ion precipitation method was used.results:glucosinolate content was 0.95% in draba nemorosa var.leiocarpa.conclusion:there are more glucosinolates in draba nemorosa var.leiocarpa,which has greater value.

目的：测定光果葶苈全草中硫代葡萄糖苷的总含量，为进一步研究开发提供基础科学资料。方法：采用硫酸根离子沉淀法。结果：光果葶苈全草中硫代葡萄糖苷总含量为0.95%。结论：光果葶苈全草中硫代葡萄糖苷含量高，有较大的开发价值。

From the filter bed a desulfurized gas is withdrawn, whose content of elementary sulfur is not more than 30 percents of the content of elementary sulfur when entering the filter bed.

从过滤床排出脱过硫的气体，它们的元素硫含量不大于进入过滤床时的元素硫含量的30％。

When pH = 6.0, the floatable potential range of jamesonite was 0 -0.7 V; pH =

在酸性介质中脆硫锑铅矿具有良好的可浮性；但在碱性介质中（pH〉8.0），可浮性急剧下降；在pH=11.0的高碱条件下，无论矿浆电位如何变化，脆硫锑铅矿的可浮性都很差。pH：6.0，脆硫锑铅矿的可浮电位区间为0-0.7V，电位范围较宽；pH=9.18时，可浮电位区间则为0～0.5V。

It can draw the conclusion thatδ~(34)S_ in solution has an approximate content(0±3‰)with S isotope of pyrrhoSne by measuring S and Pb isotope of sulfide in ore bodies,a lower value shows S in hydrothermal fluid is origin from magma;Linear array of Pb isotope in galenite suggests that Pb may be multisources.

对矿体硫化物进行硫和铅同位素测定，获得溶液的δ~(34)S_与磁黄铁矿硫同位素组成相近约等于0±3‰，δ~(34)S_值小，表明热液硫是岩浆来源，方铅矿铅同位素线性排列，暗示出铅可能是多来源的。

The conditions of S input on cropland and the character of S fertilizer consumption in China were studied based on the inquisitional and statistical data.

基于农业部统计数据、农户调查和行业统计数据，对农业生产中硫的输入状况与硫肥消费特征的分析表明，中国硫肥消费存在很大盲目性。

The conditions of S input on cropland and the character of S fertilizer consumption in China were studied based on the inquisitional and statistical data. The results shows that the S fertilizer consumption in China is unreasonable because excessive S is used in phosphate fertilizer producing area and traditional fertilizer using area without depending on the requirement.

基于农业部统计数据、农户调查和行业统计数据，对农业生产中硫的输入状况与硫肥消费特征的分析表明，中国硫肥消费存在很大盲目性，集中在过磷酸钙的生产或施用地区，缺乏整体的科学引导。

The iron pyrites formation and the curing product's oxidation caused the oil quality combustion principle to the storage tank to carry on the theoretical analysis, the temperature tendency change rule and the influence iron pyrites oxidation tendentious factor carried on the system and the thorough experimental study to the iron pyrites oxidation process, in the union petroleum processing and the storage and transport process actual situation carries on the analysis and the discussion to the oxidation rate influencing factor, under the plan dissimilar condition the curing product oxidation heating curve.

对储罐中硫铁化物的形成和硫化产物的氧化引起油品燃烧的原理进行了理论分析，对硫铁化物氧化过程中温度的动态变化规律和影响硫铁化物氧化倾向性的因素进行系统而又深入的实验研究，结合石油加工和储运过程中的实际情况对氧化速度影响因素进行分析和讨论，绘制不同条件下硫化产物氧化升温曲线。

Besides, The reaction of aldehydes with dithioacetate enethiolates followed by alkylation effectively gives α-hydroxyl ketene dithioacetals.

此外，用醛与硫代羧酸硫酯反应再通过烷基化也可以有效地获得α-羟基二硫缩烯酮类化合物。

Despite its importance, the study of S-nitrosylation remains methodologically challenges because of the lability of S-NO bond and low-abundant level of endogenously S-nitrosylated proteins.

尽管此调控具有重要性，由於硫基亚硝基键结的不稳定及低含量的内生性硫基亚硝基化蛋白质，导致在研究蛋白质硫基亚硝基化的方法上面临许多挑战。

Based on a detailed investigation of present utilization and recovery ofpyrite cinder, the preparation process of poly ferric sulphate was discussed in this article and good results were gained. The whole experiment process was divided into three parts - reduction roasting pyrite cinder, vitriol lixiviation and catalytic-oxidation polymerization.

本课题结合重点企业委托的实际科研项目，以武钢金山店铁矿硫酸厂的硫铁矿渣为主要原料，在对目前硫铁矿烧渣回收及利用现状进行综合考察的基础上，探讨利用硫铁矿烧渣制取高附加值的无机高分子絮凝剂PFS的制备工艺，取得了良好的效果。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐