emitvt.发出，发射；放射；吐露emitting ratio发射率emittercoupledadj.发射极藕合的emitter signal辐射源信号emitting diode发射二极管,发光二极管emitter branch发射极支路emittance area出射面积emit radiation射出辐射线emitting stage发射级emitting facet发射端面emitting laser出射的激光

1. The radio signals emitted from these materials are detected.
   从这些材料中发出的无线电信号被检测到了。
2. Acoustic emission is the characteristic and irreversible sound emitted by a material when it is deformed.
   声发射是当材料变形时所发出的特殊的不可逆的声响。
3. The energy emitted by galaxies comes from various sources.
   星系所发射的能量来自不同的源头。
4. Both rely on mathematical calculations to determine the location from which a positron or photon was emitted.
   这两种成像方法均依靠精确的计算来决定正电子或光于发射的位置。