expansive clay的用法和樣例：
例句
- The lack of fine fractions in the expanded clay necessitates the addition of other aggregates.
膨脹性粘土缺乏細料部分，故必須添加其它骨料。 - Commercial bentonite ores vary widely in amount and quality of the swelling clay, sodium montmorillonite.
商業用膨潤土礦中的膨脹性粘土，鈉蒙脫石在數量和質量上變化很大。
