常见例句Keywords positron annihilation lifetime of positro annihilation Doppler broadening of positron annihilation angular correlation of positron annihilation; 關鍵詞正電子湮沒;正電子湮沒壽命;正電子湮沒多普勒展寬;正電子湮沒輻射角關聯; 返回 positro