机械动力学 [机] dynamics of machinery ; machine dynamics ; [机] Mechanical Dynamics ; [机] mechanical kinetics
动力机械及工程 Power Machinery and Engineering ; power machellonery and engineering ; power machinery engineering ; Dynamic Machinery and Engineering
机械动力设计 dynamic design of machinery
动力机械 power machinery ; motive power machine ; power generating machine ; CADDynmicalMechineCAD
中央动力机械 central power-driven machine ; driven machine
机械式制动助力器 MBA
动力机械及设备 Power Machines and Equipments
机械动力 mechanical power ; Powermatic
动力机械概论 Introduction to Power Mechanics ; Introduction to Power Machinery
机械系统动力学 Dynamics of mechanical systems ; Mechanical system dynamics ; [机] machinery system dynamics
新的动力机械和人工肥料现在已经完全改变了从石器时代开始的一种生活方式。
New power machinery and artificial fertilizers have now totally transformed a way of life that started in the Stone Age.
水是机械动力的主要来源，而到了17世纪末，人们认为仅英格兰就有2万个左右的工作磨坊。
Water was the main source of mechanical power, and by the end of the seventeenth century, England alone is thought to have had some 20,000 working mills.
英国有大量的煤；然而，当时还没有有效的方法来产生机械能或为机器提供动力。
Great Britain had large amounts of coal; however, there were not yet efficient means by which to produce mechanical energy or to power machinery.
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