three-cylinder two-stroke engine

Beetles of that era came in two body styles hard-top and cabriolet and with one powertrain option: air-cooled, rear-engine, three-speed manual transmission.

那个时代的甲壳虫有硬顶式和敞篷式两种车身造型，不过动力系统却没得选，只有一款风冷后驱发动机，搭配三速手动变速箱。

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Two key technologies, i.e., process definition converting and process automation execution, are implemented in three modules, i.e., Information Converting Module, Workflow Engine Module, and Task Queue Management Module.

现阶段，我们在三个功能模块（信息转化模块、工作流引擎模块和任务队列管理器模块）里实现了两个工作流中间件关键技术：过程定义解释技术和过程自动化执行技术。

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The result shows that the Weibull distribution with two and three parameters can describe the true distribution rule of the time between failures of the aero engine well, and its result for MTBF is more reasonable and believable.

结果表明，威布尔分布能够较好地反映该型发动机故障间隔时间的真实分布规律，所得的MTBF结果更加合理可信。

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Three-Dimensional Flow Field Calculation and Analysis of Two Cooling Water Pump Impellers for Diesel Engine Application

两个柴油机冷却水泵叶轮三元流场计算与对比分析

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