马克思对技术史的研完

马克思对英国工业革命中技术因素的巨大社会功能有独到的见解，对技术史的研究更有其不可估量的理论价值和社会现实意义。     

Characteristics study on the oscillation onset and damping of a traveling-wave thermoacoustic prime mover

This paper focuses on the temperature and pressure characteristics of a Swift-Backhaus type traveling-wave thermoacoustic prime mover during its onset and damping processes, in order to understand the intrinsic mechanism ofthermoacoustic oscillation onset and the feasibility of using low-grade thermal energy based on a low onset temperature. The influences of heat input and filling pressure on hysteretic loop, due to the noncoincidence between onset and damping processes, are measured and analyzed. The condition for the occurrence of hysteresis is also briefly discussed.     

机械系统中原动机的设计

原动机是机械设备中的重要驱动部分,它的工作性能直接影响整个设备的效率及使用寿命。以机械系统中最常用的原动机---电动机为例,介绍了机械系统设计中,选择原动机时要考虑的类型、额定转速、额定电压、工作制以及功率等主要因素,并以实例阐明了机械系统设计中原动机常用的选择方法及步骤。     

MMD齿辊破碎机结构浅析

分析了老式齿辊破碎机技术落后的原因，从结构上阐述了新式MMD齿辊破碎机的设计特点，进而证明了秀论从设计思想还是制造水平上，新式MMD破碎机都有着无可比拟的优势和前景。