speed field model的用法和樣例：
例句
- In the light of the inwall depression in the process of tubular intermediate upseting, a parallel velocity field model with depression is established.
針對管坯中部鍛鍛變形過(guò)程中產(chǎn)生的內壁凹陷現象，建立了含凹陷的平行速度場(chǎng)模型。 - In addition, the Grads Field Price Effect Model put forward by Zen Fanyin is modified.
此外，對曾凡銀提出的綠色壁壘價(jià)格梯度場(chǎng)模型進(jìn)行了修正，通過(guò)對修正模型的分析，驗證了綠色壁壘在價(jià)格上對關(guān)稅壁壘的替代效應。
