The production process, application and developing trend of maraging steel are also summarized.
概述了马氏体时效钢的生产工艺，应用和发展趋向。
The property application and developing trend of engineering plastics nylon - 11 are described in this paper.
介绍了工程塑料尼龙11的性能、应用及发展趋势。
The application and developing trend of clean production in environmental management of our country are introduced.
介绍了清洁生产在我国环境管理中的应用以及发展趋势。
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