reversible double filter 可换用双联滤器
double filter device 二级滤清器装置
alternating double filter 交替两级滤器
double filter medial 双层滤料
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Double filter has a compact construction and it is very easy to install.
其结构紧凑，易于安装，不用停车就可更换空气过滤芯。
Wash tanks with rounded edges to prevent dirt from accumulating; double filter, easy remove to keep water clean for longer ;
洗涤缸内部的圆角处理避免了污垢藏匿，双重过滤，能够让水长时间保持洁净；
The instrument makes the blood cell solution very clear by using double filter. It is simple to use in clinic and gives high quality results.
该装置能同时对原液进行双重过滤，大大地提高了过滤的效率和滤液的质量。
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