| 释义 |
membrane barrier
基本例句
隔膜
Typically the vacuum is generated by a water aspirator or a membrane pump.真空由水抽子或隔膜泵产生。
The membrane is impermeable to blood cells and large molecules such as proteins, but small ones can get through it.血液分子和一些大分子例如，蛋白质，是无法渗透隔膜的，而小分子仍然可以通过。 |