two-layer frame

For the bilevel decision problem with multiobjective, this paper discusses its decision mechanism from the decision makers preference relationship: semi-cooperation and pure independence, we show that their noninferior solution sets can be represented by using the augmented weighted Tchebycheff norm problems.

针对一类多目标两层决策问题，从上、下两层决策者之间的偏好关系出发，探讨了问题的决策机制：半合作决策机制与纯独立决策机制，说明了可以利用增广加权Ｔｃｈｅｂｙｃｈｅｆ范数问题来有效地表示它们的非劣解集，据此设计辅助这类多目标两层决策问题的交互式决策方

The interaction of water waves with a submerged circular cylinder in a two-layer fluid of finite depth;

有限深两层流体中水波与水平圆柱潜体的相互作用

Hydrodynamic characteristics of a submerged pulsating circular cylinder in a two-layer fluid of finite depth;

两层流体中振荡水平圆柱潜体水动力特性

Added mass and damping of a floating rectangular box in a two-layer fluid;

两层流体中矩形箱浮体的附加质量和阻尼系数

The transient flow in two-layered reservoirs with weak cross-flow interlayer is investigated, including two cases, one is the flow in radical layered reservoirs with production in single zone, another is the flow in one-dimensional layered reservoirs with a producing well and a injection well in different zones.

本文研究了层间有弱渗透夹层的两层油藏中两种情形的瞬态渗流,包括单层打开的瞬态渗流和一层注入、一层采出的两层油藏的瞬态渗流。

Testing pressure technology of two-formation isolation and simultaneous pumping in well appraise in testing wells;

两层分采同抽井的测压技术及试井评价