机械动力专业是指以机械和动力为主要研究对象的专业领域。

中文解释：

机械动力专业是一个涉及机械和动力学科的专业领域，主要研究各种机械系统和动力系统的设计、分析、制造和运行等方面。该专业领域包括理论力学、材料力学、热力学、流体力学、机械设计、机械制造、机电一体化等多个学科方向，旨在培养具备机械系统设计、制造、运行和维护等能力的专业人才。机械动力专业广泛应用于能源、交通、制造、航空航天等领域，为现代工业和科技发展做出了重要贡献。

英文解释：

Mechanical engineering is a professional field that focuses on the study of mechanical and power systems. It mainly involves the design, analysis, manufacturing, and operation of various mechanical systems and power systems. The field of mechanical engineering includes multiple disciplines such as theoretical mechanics, materials mechanics, thermodynamics, fluid mechanics, mechanical design, mechanical manufacturing, and mechatronics. The goal is to cultivate professionals who possess the ability to design, manufacture, operate, and maintain mechanical systems. Mechanical engineering is widely used in various fields such as energy, transportation, manufacturing, aerospace, etc., and has made significant contributions to modern industrial and technological development.