semipermeable membrance

• 半透膜

semipermeable membrance的用法和样例：

例句

1. Desalination is carried out by simply lowering into the ocean a long, hollow pipe capped at the lower end by a semipermeable membrane.
   用一根长空心尼龙管插入海水里，并用半透膜封住较低的一端来进行海水淡化。