在发射天线上，最好使固有波长略大于所要求的波长。
In transmitting antennas it is best to have the natural wavelength slightly above desirable wavelength.
声光器件由于其固有的高速度、宽频带和可能多波长同时工作的特点而成为研究重点。
They have become the focal point of the research for their characteristics of high speed, wide bandwidth and the capability of simultaneous multi-wavelength operation.
声光器件由于其固有的高速度、宽频带和可能多波长同时工作的特点而成为研究重点。
They have become the focal point of the research for their characteristics of high speed, wide bandwidth and the capability of simultaneous multi-wavelength operation.
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