“arctic tree line”的概念、定义、翻译、参考文献-科学参考

单词	arctic tree line
释义	arctic tree line [`ärd·ik ¦trē ´līn] ^ECOLOGY The northern limit of tree growth; the sinuous boundary between tundra and boreal forest.
随便看	grid meridian grid metal grid modulation grid navigation grid nephosope grid neutralization grid north grid parallel grid-plate capacitance grid-plate transconductance grid-pool tube grid prime vertical grid pulse modulation grid pulsing grid-rectification meter grid resistor grid return grid rhumb line grid spectrometer grid suppressor grid swing grid track grid transformer grid-type level detector grid variation

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