您要查找的是不是：
- “倒U”理论 invert "U" theory
- 双S曲线模型:对倒U型理论的发展与完善 A New Double-S Curve Model for Improving the Converse-U Theory
- 理论 theory
- 倒U曲线 inverse U curve
- 倒U假说 Inverted-U-Type Hypothesis
- 理论的 academic
- 理论上 theoretically
- u盘
- 倒U型特征 converse U type characteristic
- 理论知识 speculative knowledge
- 理论基础 theoretical principle
- 倒出 swill
- 理论上的 theoretic
- 倒U型假说 Inverted-U Hypothesis
- 倒掉 outwell
- 军事理论 Military Theory
- 倒档 reverse gear
- 理论体系 system info
- 倒钩 barb
- 理论依据 theoretical foundation
