primary field短语⁷⁹⁹⁷⁸⁺⁹ 基本例句 一次场 The primary field for2012 is overcrowded, and Republicans are overheated. 2012年的政坛太拥挤，共和党过热。 ecocn Calculation of primary field shows that in emission rim, the primary field is quite different at different places and has the maximum value at the center. 计算显示，在发射框内，不同的地方其一次场差别很大，在中心处其场值最大。 say666