emission CT发射型计算机断层(术)emissionn.散发；发行；排放emissions legislation排放法规emission - computed发射型计算机emission - computer发射型计算机emission of waste gas废气排放量emission spectroscope发射分光镜emission-decreasing减排emission interference发射干扰emission of radiation辐射emission spectrometer发射分光计emission spectrometry发射光谱测量学