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- nitrogen and sulfur deposition 氮、硫复合沉降
- The invention discloses a low-temperature preparation method of a photocatalyst codoping titanium dioxide, carbon, nitrogen and sulfur. 本发明公开了一种碳氮硫三元素共掺杂二氧化钛光催化剂的低温制备方法。
- Besides carbon, there are very small amounts of other substances, such as nitrogen and sulfur that can become trapped in the crystal when it is formed in the mantel. 除了碳之外,这里也含有少量的其它物质,例如氮和硫,我们可以在地幔形成的水晶中找到它们的踪迹。
- Recent progress of dimethyl carbonate which acted as methylating reagent in methylation reactions that took place on carbon, oxygen, nitrogen and sulfur atoms was reviewed. 综述了碳酸二甲酯作甲基化试剂在碳、氧、氮和硫原子上进行甲基化反应的研究进展,提出了今后研究工作的发展方向。
- In order to search for novel potent antimalarials, a series of ethers and esters of dihydroqinghaosu with halogen, nitrogen and sulfur heteroatoms substisuted in their side chain was prepared. 为增强双氢青蒿素酯和醚类衍生物的抗疟作用,我们合成了42个侧链上带有卤素、氮或硫取代的双氢青蒿素酯和醚类化合物。
- novel nitrogen and sulfur compound 新型氮硫化合物
- Quantifying the dry deposition of reactive nitrogen and sulfur containing species in remote areas using a surrogate surface analysis approach 用一种表面替代分析方法定量遥远地区含核素活性氮和硫磺的干沉降
- Plumbite of sodium and sulfur method. 硫酸钠和硫酸铅法。
- It was also found that the nitrogen and phospho... 与主要作物相比,水葫芦对氮与磷素营养的吸收能力较强。
- A tiny ball of bat guano and sulfur. 材料成分：一个蝙蝠粪和硫磺小球。
- The key pollution indicators are ammonia nitrogen and BOD. 主要污染指标是氨氮和生化需氧量。
- Its sulfur deposition badly affects the production of such a gas reservoir. 硫沉积现象严重影响了这类气藏的开发。
- This layer is rich in dissolved nitrogen and nitrides. 它能有效的分解氮和氮化物。
- Because the removal of phosphorus and sulfur require special condition that can be met only by the basic process. 因为除去钢中的磷和硫需要一些特殊的条件，这些条件只有碱性法才能满足。
- The minerals, calcium, and sulfur were at the bottom of the ocean. 矿物质、钙以及硫磺均存在于海洋底部。
- A good general-purpose gas has about 97% nitrogen and 3% hydrogen. 一种较好的通用气体含大约97%25的氮气和3%25的氢气。
- The current occurrence of torrent spurs him to buy fur and sulfur. 现行的倾泻事件驱使他买毛皮衣服和硫磺。
- The current occurrence of torrent spurs him togbuy fur and sulfur. 现行的倾泻事件驱使他买毛皮衣服和硫磺。
- Among the environmental pollution factors, the most detrimental factor is atmospheric sulfur deposition for atmospheric corrosion of carbon steel. 在所研究的环境因子中,对碳钢大气腐蚀危害最大的是大气中的硫沉降因子。
- The current occurrence of torrent urs him to buy fur and sulfur. 现行的倾泻事件驱使他买毛皮衣服和硫磺。
