The stationary potential deep-etching method is most available than other method to prepare for metallograph analyses on SEM.

恒电位深腐蚀法是目前已知的制备扫描电镜用试样的最有效的方法。

youdao

Based on a potential approach, the optimality equations satisfied by the optimal stationary policies are derived.

基于性能势方法，导出了由最优平稳策略所满足的最优性方程。

youdao

Such as: the balance of elastic membrane, the heat conduction of stationary state, the incompressible potential flow, the problem of electrostatic field and magnetostatics field.

例如：弹性膜的平衡问题，稳定状态的热传导问题，不可压缩势流问题，静电场问题以及静磁场问题。

youdao