Double membrane structure and the use of solar energy, tidal power, fully embodies the combination of energy, environmental protection, the nature of the design concept.
双层膜结构的使用及太阳能，潮汐能的组合供电，充分体现了节能，环保，亲近自然的设计理念。
The design, fabrication and properties of the ytterbium-erbium co-doped double-cladding fiber are reported, which is made by method of a combination of the MCVD and solution doping technique.
文中主要介绍了用MCVD工艺结合溶液掺杂技术制备铒镱共掺双包层光纤的设计、制作及性能。
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