杠杆式开瓶器（Lever Model）：这种开瓶器的发明人Herbert Allen以前是石油勘探工程师，他用石油钻井的精神来发明的这支开瓶器看起来也和钻井平台差不多，虽然...
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back lever model 后杆型式
double-wheel and lever model 双轮杠杆模型
the double-wheel and lever model 双轮杠杆模型
lever management model 杠杆管理模式
In the first model, a group of mice were put in a cage with levers that dispensed food. When the mouse pushed a lever, a liquid treat — either a starchy or a sweet liquid — came out.
第一组试验中，一群老鼠被置于一个装有能提供食物的操纵杆的笼子里，当老鼠推动操纵杆的时候，一滴液体食物(含有淀粉或糖的液体)就会掉出来。
A dynamic simulation model of start-up process including fuel pumped section and the dynamic nozzle valve lever, etc. is established for the torpedo thermal power system with pressure adjustment mode.
文中针对使用燃料压力调节供应方式的热动力系统，建立了包括充填集液腔和喷嘴阀杆运动等启动过程动态仿真模型；
The model of bilevel linear programming which upper lever has without constraint is discussed in this paper, the algorithm which can find all vertexes of the programming is given.
讨论的是上层不带约束的二层线性规划模型，给出了求其所有顶点的算法，此算法为进行二层线性规划的灵敏度分析打下了坚实的基础。
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