Based on numeral simulation result of combination flooding composing, oil displacement experiments are carried out in different penetration ratio natural core and artificial core.
并在数模优化组合驱段塞构成的基础上，对不同渗透率的天然岩心与人造岩心进行了驱油实验。
2
The penetration length of the core melt in sandwich injection molding was investigated by changing the viscosities of melts and process parameters.
以揭示材料粘度以及工艺参数对夹芯注塑成型过程中芯层熔体穿透深度的影响规律。
3
The author believes that the bearing core is a precondition for leap-frog penetration and for maintaining the constant angle of fracture resulted from the release of the energy absorbed by the core.