铜催化剂改良后，提高了加氢效率、选择性和使用寿命。
The hydrogenation efficiency, selectivity and life-time of copper-based catalysts have been improved after the modification of the catalysts.
对于湿法冶金溶剂萃取过程，如铜或稀土等的分离可望在提高设备效率，降低溶剂装量，减少相夹带等关键技术方面取得突破性进展。
In solvent extraction processes such as the separation of copper or rare earth elements, it will make a great progress to increase extractor efficiency and decrease solvent inventory and entrainment.
从降低电机的铁耗、铜耗和机械损耗着手，给出了提高电机效率的一般方法。
The common method of enhancing the efficiency is given, such as decreasing the iron loss, copper loss and machine loss.
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