主要介绍了国外近年来塑料的开发动向及提出几点建议。
The developmental trend of plastics at abroad in recent years has been presented in the article.
介绍了国外近年来正在积极探索的几种高速流场测量新技术。
Several new techniques on measurement of high speed flow actively developed abroad in recent years are introduced.
国外近年来已颁布不少防止汽轮机进水保护措施的技术标准。
Codes for protective measurements against water intrusion have been issued abroad during the recent years.
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