use

Convention on Law of Non-Navigational Uses of International Watercourses is one of the great fruits of the development of the international law on the uses and conserve of freshwater.

《国际水道非航行使用法公约》是近年来国际淡水资源利用与保护法律制度发展的重大成果之一。

Materials of forged steel roll for cold rolling wide strip and its application;

宽带钢锻钢冷轧辊的材质与使用

Features of all kinds of hard alloy cu ts and its application and mainternance;

硬质合金刀具的特点·使用·维护

Research and application of topside valve house of pump plunger;

抽油泵活塞上阀罩的改进与使用