filteraidn.助滤剂
filtern.过滤器;滤色镜;滤光器v.过滤;渗透
filter strips滤色条
filter sample滤材样品
filtered ring滤子化环
filter fabric滤布
filter vessel过滤容器
filter action滤波作用,滤光作用
filter medium滤介体
filter bottle滤瓶
filter output滤波器输出
filter sponge过滤用海绵胶