新手入门级的自由泳指导-向专业的游泳教练学习一些技巧，一方面可以自立下水的自信心，另一方面也掌握一些关于自由泳的知识。
Guide to front crawl for beginners - Learn a few techniques from our expert swimming teacher, to build up your confidence in the water and your knowledge of the front crawl swimming stroke itself.
依据热泳基本原理，设计了一种新型湍流方环形双壁冷却式通道。
A kind of new turbulent flow in annular square channel with two cooled wall was designed on basic thermophoresis principle.
新手入门级的自由泳指导-向专业的游泳教练学习一些技巧，一方面可以自立下水的自信心，另一方面也掌握一些关于自由泳的知识。
A Guide to front crawl for beginners - Learn a few techniques from our expert swimming teacher, to build up your confidence in the water and your knowledge of the front crawl swimming stroke itself.
新手入门级的自由泳指导-向专业的游泳教练学习一些技巧，一方面可以自立下水的自信心，另一方面也掌握一些关于自由泳的知识。
A Guide to front crawl for beginners - Learn a few techniques from our expert swimming teacher, to build up your confidence in the water and your knowledge of the front crawl swimming stroke itself.
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