double filter device的意思|示意

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双过滤装置

二级滤清器装置 ... double face sledge hammer；双面大锤 double filter device；二级滤清器装置 double flange；双法兰[凸缘] ...

Filter rotary device is designed for colorimetric system of double photoelectric detector and temperature-measuring experiment is conducted.

针对双光电探测器比色系统设计了滤光片旋转系统；进行了温度测量实验。