level difference短语⁹⁶⁶⁷⁷⁺⁶ 基本例句 电平差 In the condition that a beating occurs, the energy level difference could exceed the laser linewidth, and the measurement accuracy could reach the same order of magnitude as the laser linewidth. 在符合拍频条件时，能级差可以超出激光线宽，其测量精度可达到与激光线宽同一数量级。 cnki