查询词典 sulphur

Thus a sulphur sol can,, be prepared as follows: a small amount of sulphur is first dissolved in absolute alcohol.

因而硫磺sol 装於罐中，(在冯WEIMARN 以后)，准备如下：小量的硫磺首先被溶化在absolute 酒精里。

The invention relates to a method for the extraction of keratin from dead animal skins, characterised in the treatment of dead animal skins with a substance of general formula, or at least one corresponding alkali metal, earth alkali metal, ammonium, or phosphonium salt, the variables having the following definitions: R, R = together or independently, H, C6-C14 aryl, C1-C12 alkyl, unsubstituted or substituted with one or several SH or OH groups, R, R = together or independently, H, C6-C14 aryl, C1-C12 alkyl, unsubstituted or substituted with one or several SH or OH groups, whereby at least one of R or R is not H, or R and R are not H and two vicinal groups of R to R together may be C3-C10 alkylene, R = H, C1-C12 alkyl, H-C=O or C1-C4-Alkyl-C=O, X, X, X and X = OH, SH or NHR, whereby where Rto R contains at least one sulphur atom, at least one of X to X = SH and where R to R contains no sulphur atom, at least two of X to X= SH.

本发明涉及一种从死亡动物原皮中除去角质的方法，其特征在于用通式I的物质或至少一种对应的碱金属盐、碱土金属盐、铵盐或∴盐处理死亡动物原皮，式I中各变量定义如下：R 1 和R 4 相同或不同且选自氢、C 6 -C 14 芳基和C 1 -C 12 烷基，其未被取代或被一个或多个SH或OH基团取代；R 2 和R 3 相同或不同且选自氢、C 6 -C 14 芳基和C 1 -C 12 烷基，其未被取代或被一个或多个SH或OH基团取代，其中至少一个基团R 2 或R 3 不为氢，或R 1 和R 4 不为氢，且两个相邻基团R 1 -R 4 可以一起为C 3 -C 10 亚烷基；R 5 选自氢、C 1 -C 12 烷基、H-C＝O或C 1 -C 4 烷基-C＝O；X 1 、X 2 、X 3 和X 4 选自OH、SH和NHR 5 ，其中若R 1 -R 4 含有至少一个硫原子，则至少一个基团X 1 -X 4 为SH，以及若R 1 -R 4 不含硫原子，则至少两个基团X 1 -X 4 为SH。

In order to void sulphur corrosion of steel surface layer when it is heated,in addition to more requirement of material surface quality,this paper gives some measure that alkyne gas of producer is given a desulfidation process by controlling the atmosphere in the producer and that use the alkyne of low sulphur and without smoke as row material.

为避免加热时对钢表层的硫腐蚀，除对材料表面质量提出了进一步的要求外，还提出了采用可控气氛，对发生炉煤气进行脱硫处理及使用低硫无烟煤作发生炉煤气的原料等解决措施。

Crucifer crops are sensitive to sulphur, the output of crucifer crops can be enhanced by applying sulphur fertilizer.

十字花科作物是硫的敏感作物，施用硫肥可以提高十字花科作物的产量。

The effect of the three rotation planting methods on the amount of the available sulphur in the soil was studied.The results indicated that the total available sulphur content under the three different rotation plantin...

施硫可增加小麦的穗长、穗粒数，增加油菜单株结荚数、角果长和角粒数，从而增加了小麦和油菜的产量，施硫45 kg/hm2使小麦、油菜产量的增幅分别为6.5%~17.3%和

The sulphur-rich protein encoding genes are transferred into crowtoe to improve the content of the sulphur-containing amino acids of forage protein through genetic engineering. Zeins, maize prolamin, the major protein reserves of maize kernels, are accumulated in protein bodies arising from the rough endoplasmic reticulum.

通过分子克隆及遗传转化等方法，将外源高含硫氨基酸蛋白基因转入百脉根，提高牧草蛋白中含硫氨基酸含量具有十分重要的意义。

Is categorized as a sensitive plant for it is sensitive to Sulphur Oxide and changes the color of its petals when exposed to a changing concentration of Sulphur Oxide in air.

因为对二氧化硫比较敏感，花的颜色可随周围空气二氧化硫含量的多少而有所改变，所以称之为敏感植物。

A comparison has been made between the sensitometric results obtained from sulphur-sensitized cubic silver bromide emulsions which are latensified and hypersensitized with a gold thiocyanate solution, respectively, and those obtained from sulphur-plus-gold sensitized emulsions.

本文采用硫氰酸金溶液对硫敏化的立方体溴化银乳剂分别进行潜影加强和过敏化处理，并与硫加金敏化的乳剂进行感光性能的比较。

When temperature is 300 慍, sulphur raises efficiency of producing gas from kerogen 28 folds in Fushun oil shale (comparing to the condition that no sulphur exists in the oil shale), and raises efficIency of pmducing gas of the whole rock 21 folds (comparing to the condition that xm sulphur exists in the oil shale).

在300℃时使干酪根气态烃产率提高28倍（和无硫时干酪根产率相比），使全样气态烃产率提高21倍。

Results from this study showed that the experimental forest at Lisselbo had benefited from the sulphur acid addition (S2) and the fertilization combined with sulphur addition(N2P2K2S2) during the experiment. Addition of sulphur led to a slight increase of relative basal area growth during the experiment 1971-1977 (+4%), compared with the control (C,0%).

在实验处理期间，瑞典Lisselbo地区实验松林受益于硫酸的施用和酸肥的混合使用。1971-1977年间，酸处理的松树林分基径面积的增长比对照提高了4%；1976年酸处理结束，但其潜在的正效应在1978-1985年间得到增强，基径面积的增长比对照提高了20%，随后的某一阶段开始下降，1993-1994为11%。

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