forward of短语³⁴⁴⁹⁹ 基本例句 在 The author makes the proposal of establishing a preliminary underground gas drainage numerical model, which is the equivalent of boundary conditions and shift forward of initial conditions. 本文从数值模拟的角度提出了建立井下瓦斯抽放数值模型的初步方案，即将边界条件等效和模拟时间前推。 chemyq