filtermask过滤式防毒面具
filtern.过滤器;滤色镜;滤光器v.过滤;渗透
filtered through the sand用沙过滤的
filter input stream class过滤器输入流类
filter paper dust counter滤纸测尘计
filter-tipped cigarettes(带有)过滤咀(的)香烟
filtered bacterial culture过滤了的细菌培养液
Filter in frequency domain频率域滤波
filter theory of attention注意过滤论