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本文描述了测定光电管绝对灵敏度的一种简单方法。
A simple method for determining absolute sensitivity of phototube is described.
youdao
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还有绝对的灵敏度，同时又要有绝对的安全。
It stands for agility and at the same time, for safety.
youdao
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还有绝对的灵敏度，同时又要有绝对的安全。
It stands for agility and at the same time, for safety.
youdao