cro -field electron beam multiplier 交叉电场电子束倍增器 photoeleectric electron multiplier tube 光电电子倍增管 microchannel electron multiplier array 微通道式电子倍增器阵列 ..
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使每个连续的光电倍增管电极的电压都比它前面一个电极的电压更高，这样电子就得到加速。
Electrons are accelerated by making the voltage of each successive dynode of the tube more positive than the previous one.
保持各个光电倍增管的增益一致性对正电子发射断层成像（PET）的质量至为重要。
To make all PMTs' gains identical through auto-adjustment is important for ensuring the PET imaging quality.
当光线进入光电阴极的光电倍增管，光电子从阴极发出。
When light enters the photocathode of a photomultiplier tube, photoelectrons are emitted from the photocathode.
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