emitting substance meaning in English
发射物
Examples
- The major difference between the two is that instead of a positron - emitting substance , spect uses a radioactive tracer that emits high - energy photons
这两种技术最大的区别在于，单光子发射计算机化成像不用发射正电子的物质，而是用一个能发出高能量光子的有放射性的跟踪剂。