gravitate downwards是什么意思

用法例句

This article presents a CFD method which simulates longitudinal gravity launching of a hull along a slipway.

采用CFD方法对船体从船台上纵向重力式下水这一运动过程进行动态数值模拟。

To supply hydrodynamic parameters for ship launching,computational fluid dynamics(CFD) method was used to analyze the process of longitudinal gravity launching for ship from a slipway.

为给船体下水提供水动力参数,采用计算流体动力学(CFD)方法对船体从船台上纵向重力式下水过程进行动力学分析。