常見例句雙語例句Emission spectroscopic techniques are employed to study the loss of thermionic emission material barium from the cathode of a T12 fluorescent lamp.應(yīng)用發(fā)射光譜技術(shù)研究了T12熒光燈隂極電子發(fā)射材料鋇的損失。 返回 spectroscopic lamp