查询词典 sulfur

The traditional mineralizer fluorine and sulfur are replaced by basalt and slag.

矿化剂选用了玄武岩和矿渣替代了传统的氟硫矿化剂。

The mixing ratio s of reduced sulfur compounds in Beijing city and Tibetan highland were determined by using the method.

利用该方法测定了北京市和青藏高原地区还原态硫化合物的混合比，结果表明，北京市和青藏高原地区存在较强的COS和CS2 人为和自然排放

Industry often molybdenite ore melting molybdenum trioxide after the addition of sulfur at high temperature hydrogen and then reduced to pure molybdenum.

工业上经常用辉钼矿石熔烧除硫后的三氧化钼再在高温下用氢还原成纯钼。

Monazite, rutile, phosphorus and yttrium ore, tantalum and niobium ore, zircon, ilmenite and exploitation of the reserves volume ranks first in the country, Yunfu pyrite is China's largest reserves of pyrite in the sulfur content of the highest in a large-scale mine.

独居石、金红石、磷钇矿、钽铌矿、锆英石、钛铁矿的储藏量和开采量均居全国首位，云浮硫铁矿是中国硫铁矿中储量最多、含硫量最高的一座大型矿山。

Diallyl trisulfide was synthesized with a yield of 76.4% based on sodium thiosulfate, allyl bromide and sodium sulfide. And diallyl tetrasulfide was synthesized by the reaction of sulfur monochloride with ally1 mercaptan with a yield of 81.0%.

以硫代硫酸钠、烯丙基澳和硫化钠为原料，合成了二烯丙基三硫，产率为76.4%；以一氯化硫和烯丙硫醇为原料合成了二烯丙基四硫，产率为81.0%。

In the second part the reactions of acetophenones with sulfur and morpholine under microwave irradiation were studied.

本文的第一部分对微波辐射在有机合成中的应用进行了较为全面的文献综述。

By the end of 2005, its production capacity reached 330,000 T/Y urea, 300,000T/Y Synthetic Ammonia, 100,000T/Y sulfur compound fertilizer, 200,000T/Y hi-concentrated compound fertilizer, 80,000 T/Y vitriol, 30,000 T/Y muriatic acid, 50,000 T/Y carbinol and so on.

到2005年底，年生产规模已达到：合成氨30万吨，尿素33万吨，硫基复合肥10万吨，高浓度复合肥20万吨，硫酸8万吨，盐酸3万吨，甲醇5万吨、碳酸氢铵20万吨。

The 220 kt/a hydrogenation unit for FCC naphtha to reduce olefin and sulfur is evaluated in this paper.

阐述了220 kt/a催化裂化汽油加氢脱硫异构降烯烃装置的运行和标定情况。

The δ〓S value of pyrite, sphelerite and arsonopyrite is in the range of 4. 0‰ and -4. 2‰ with the highest frequency occurring around zero, indicating a uniformed sulfur source. The large variation and mainly negative values (0.2‰～-11. 3‰) of δ〓S for stibnite could be interpreted by isotope fractionation. The carbon isotopic characteristics exhibit a mixing nature of magmatic carbon and organic carbon.

矿床中的热液成因黄铁矿、闪锌矿和毒砂的δ〓S＝4.0‰—-4.2‰，呈塔式分布，δ〓S集中在0附近，表明其成矿体系具有均—化硫的同位素组成，而辉锑矿的δ〓S变化范围较大(0.2‰—-11.3‰)，除一个样品外均为负值，这是硫同位素分馏作用的结果。

The results indicated that most of the samples had acid producing potential, because of the high sulfur content or low acid neutralization capacity.

结果表明，大部分的样品都具有产酸潜力，这是因为它们较高的含硫量或较低的酸中和能力。

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。