It was a very difficult first step to accept the positron.
接受正电子是艰难的第一步。
The result is that the electron shadow and the positron shadow are separated.
结果将使得电子的阴影和正电子的阴影被分开。
The fraction is dependent on the target material, temperature and incident positron energy.
转换率依赖于靶材料、靶温度和入射慢正电子能量。
The fraction is dependent on the target material, temperature and incident positron energy.
转换率依赖于靶材料、靶温度和入射慢正电子能量。
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