这个频率梳理装置由一束产生一系列非常短，空间上平均分布（就好象梳齿一样）、频率上广泛分布的光脉冲产生的。
The frequency comb is generated by a laser that produces a series of veryshort, equally spaced pulses of light (like the teeth of a comb) across a broadspectrum of frequencies.
灌水频率可改变土壤水分的空间分布和土壤蓄水量。
Irrigation frequency also changed the spatial distribution and storage of soil water.
据一些种群的大小频率直方图和生存曲线讨论了部分生物的生存特征、空间分布及其与环境的关系。
The life property, the distribution and relationship of some organisms with the environment are discussed according to their size-frequency histograms and survivorship curves.
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