Translation of "technical progress" into Chinese

The youth of today is the main key to scientific and technical progress and the engine of cultural exchange among nations.

今天的青年是科学和技术进展最关键的因素,是国家之间文化交流的发动机。

These paintings illustrate hope, the progress of science, social progress and technical progress.

这些绘画表现出希望、科学进步、社会进步以及技术进步。