phototimer

常见例句

A race is timed electronically by a phototimer which is accurate to one hundredth of a second.
径赛采用配有摄影计时器的电子计时，精确到百分之一秒。
split measurement type phototimer
分割测量式曝光限时器
phototimer for indirect radiography
X线间接摄影用限时器
Keywords Brightness;Film image density;Phototimer;Exposure control;
关键词亮度;胶片影像密度;光电计时器;曝光控制;
9.A race is timed electronically by a phototimer which is accurate to one hundredth of a second.
径赛采用配有摄影计时器的电子计时，精确到百分之一秒。
The phototimer keep warm;
照相机的保暖；