The subcooled boiling states were visualized by Shadowgraph visualization technique and the pressure oscillation was measured by the pressure sensor. 在過(guò)冷態(tài)超流氦沸騰中，運用可視化方法對不同過(guò)冷度下的沸騰過(guò)程進(jìn)行了觀(guān)測，同時(shí)運用壓力傳感器詳細研究了沸騰過(guò)程中的壓力振蕩。
The existence and stability of the optimal control is established based on the parabolic regularization method and the weak convergence technique. 用拋物正則化方法和弱收斂技巧，證明了最優(yōu)控制的存在性和穩定性。
