valence electron density的用法和樣例：
例句
- The electron dense deposits by electron microscopy at high magnification are seen here.
圖示電子顯微鏡高倍視野下的高電子密度沉積物。 - The ability of the ionosphere to reflect these waves is dependent upon normal variations in the electron density at different levels.
電離層反射電波的能力取決於不同高度上電子密度的正常差別。
