1. This review outlines the reduction methods of nitro-aromatic compounds, including catalytic hydrogenation reduction, hydrazine hydrate reduction, and carbon monoxide reduction. 对主要方法-催化加氢还原法、水合肼还原法、一氧化碳还原法进行了评述。
3. On the international market, goose price relatively chicken price is high 2 - price of flesh of 3 times duck relatively chicken price tall 1 times. 在国际市场上,鹅肉价格较鸡肉价格高2-3倍鸭肉价格较鸡肉价格高1倍。
4. The new research progress in synthesis ofp aminophenol by chemical reduction, catalytic hydrogenation, electrochemical reduction and carbonic oxide reduction from nitrobenzene was reviewed. 研究硝基苯催化加氢制备对氨基苯酚的工艺条件,对影响因素进行了探讨。
5. The two steps process will include the pre-reduction of lumps of fine chromite ore by means of a rotary hearth furnace and the final reduction in a melting-reduction shaft furnace. 宝钢股份不锈钢分公司正与宝钢技术中心、上海大学合作开发低成本生产含铬>25%不锈钢母液新工艺,该工艺采用转底炉预还原冷固结铬矿粉团块或球团,再经熔化一还原竖炉终还原二步法。