By changing the working mode of the frequency spectrum monitor (FSM), the radar can run in the frequency segment with lower noise disturbances, and the ambient noise data obtained by FSM ca.

该方案通过灵活设计频谱监测部件的工作方式，不但能使雷达工作在干扰较低的频段，而且还可充分利用频谱监测所得的外界噪声数据。

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DFB is called "green pesticide" with the characters:individual mode of action, broad spectrum, high performance, hypovirulence, low cost, long residual efficient duration.

灭幼脲以其独特的杀虫方式，及其广谱、高效、低毒、低成本、残效期长等优点，被誉为“绿色农药”。

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The main effect of inflectional instability mode in the final breakdown seems to interact with the disturbances having developed and thus widens the frequency spectrum to turbulent state.

属于拐点不稳定性的高频二次不稳定模态对最后转捩的影响主要体现在与其它扰动的相互作用，并导致出现紊流状态宽带频谱。

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But crystal fibres push the range of single-mode wavelengths right into the visible part of the spectrum, opening up huge new tracts of wavelength for telecommunications.

ECONOMIST: A new approach to making optical fibres