| 释义 |
semipermeable membrane短语⁶⁴⁶⁸⁰
基本英英例句例句
半透膜
Noun:
a membrane as a cell membrane that allows some molecules to pass through but not othersDesalination is carried out by simply lowering into the ocean a long, hollow pipe capped at the lower end by asemipermeable 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。 Methods Core tablets containing osmotic active agent were prepared by direct compression and spray coated with swelling layer and semipermeable membrane subsequently.
方法粉末直接压片法制备含渗透活性物质的片芯，滚转包衣锅法分别包溶胀层和控释衣层。 cnki |