Application of the contra-flow helium mass spectrometer leak detector in the vacuum freeze drying plant 返流法氦质谱检漏仪在冻干机检漏中的应用
Characteristic solution to contra-flow equation of sewages flowing in fractured rocks 污水在裂缝性地层中对流方程的特征线解法
From the angle of transportation planner, the dissertation analyses the operation of how to setting up contra-flow lane to satisfy the requirement of evacuation in the effective time before the landing of typhoon. 论文从交通决策者的角度出发,分析在台风登陆前的有效时间内,如何进行疏散逆向车道设置问题,能够满足疏散交通的需求。
Laser cladding, melted substrate diffused into the coating at the effect of contra-flow and mass transfer. This can make the coating diluted and component of the coating will have a great change. 由于在激光熔覆过程中熔化的基体材料通过对流传质作用扩散到涂层中,造成了涂层的稀释,从而使涂层成分有较大的改变。