measuring frequency roller的意思|示意

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测频辊

velocity measuring roller 测速辊
length measuring roller 测长辊
Control rods position measuring system 控制棒位置测量系统
The rods measuring devices 棒测量装置
measuring rod and weighting scale 测量杆和秤
roller clearance measuring instru we are pirates, these data are stolen from youdao 滚子间隙测量仪我们是盗版者，这些数据是从有道偷来的
physical and chemical measuring room 理化测量室
aeroball measuring room 气动小球测量室
radiation measuring room 辐射测量室
air activity measuring room 空气[放射性]活度测量室