The mechanics on the phase transfer could be explained clearer and deeper by combining material micro structure, micro mechanics of phase transform and macro thermodynamic theory.
将宏观的热力学理论与微观的物质结构及相变的微观机理结合起来，能较好地阐明该相变机理。
A "theory of micro element" and equivalent seepage flow was raised to solve the various mass flow of single phase in the horizontal wellbore.
对于水平井井筒的稳定单相流动，提出了水平井井筒管流的“微元段”观点，从而简单实用地解决了井筒内的变质量流问题；
A binary Fresnel lens with 8 phase steps can be manufactured with micro-optical element fabricating technology and three times of alignment according to Fresnel diffraction theory.
根据菲涅耳衍射理论，采用微光学元件制作技术，通过三次套刻制作出八位相台阶的二元离轴菲涅耳透镜。
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