| 单词 | ultrafilter |
| 释义 | ultrafilter —ultrafiltration /ul'treuh fil tray"sheuhn/, n. /ul'treuh fil"teuhr/, n. 1. Physical Chem. a filter for purifying sols, having a membrane with pores sufficiently small to prevent the passage of the suspended particles. 2. Math. a filter in a topological space, having the property that no other filter exists in the space having among its subsets all the subsets in the given filter. v.t. 3. Physical Chem. to purify by means of an ultrafilter. [ULTRA- + FILTER] |
| 随便看 |
英语词典包含168451条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。