“valley line”的概念、定义、翻译、参考文献-科学参考

单词	valley line
释义	valley line [`val·ē ´līn] See <<thalweg>>
随便看	fixed and group flashing light fixed arch fixed area fixed artillery fixed attenuator fixed-base index fixed-bed hydroforming fixed-bed operation fixed bias fixed-bias transistor circuit fixed-block fixed bridge fixed capacitor fixed carbon fixed-charge problem fixed contact fixed cost fixed-cycle operation fixed disk fixed echo fixed-electrode method fixed emplacement fixed end fixed-end beam fixed-end column

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