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。

youdao

Nathan：Step forward, and shift your weight.

慧慧：然后左脚向前一步重心随着前移。

youdao

So, we would love to know your thoughts on how you're going to balance these two going forward, or even potentially shift the conversation back, " Hal asked.

因此我们想知道你的想法，今后如何平衡这两类内容，或者干脆有可能将谈话内容拉回到经济问题。

youdao

Midfielders Savage and Guppy terrorised Newcastle in the middle of the park, servicing make-shift forward, Matt Elliott, to good effect.

BBC: Shearer

Four buttons arrayed in a circle bring up the command menu, play and pause songs, and shift forward and back.

FORBES: IPod's A Winner

Shift from forward to reverse and back again.

BBC: How to drive in snow and icy weather