neutron source calibration

例句：

1. 1. Theneutron source calibration is crucial for the accurate measurement of radioactivity.
   中子源校准对于放射性物质的准确测量至关重要。
2. 2. During the neutron source calibration process, the radiation level must be carefully monitored to ensure safety.
   在中子源校准过程中，必须仔细监测辐射水平以确保安全。
3. 3. The neutron source calibration equipment was installed in the laboratory to improve the accuracy of the measurements.
   实验室安装了中子源校准设备以提高测量的准确性。