impurely meaning in English

不纯地
污秽地
污染地

With the engineering thermophysics subject as a main theory basis , the boiler , the steam turbine , the internal combustion engine and the other new , being developed power machinery and system as the research object , the application of engineering thermodynamics ， heat transfer , computer system control theory , environmental science , microelectronics technology , energy - saving technology and other knowledge ， study the process and the basic law of fuels chemical energy and liquid kinetic energy to converse to the power securely and efficiently and low ( or no ) impurely ; study the energy conversion process systems and technology of equipment automatic control ; study the producing mechanism and emission control technology of combustion pollutants ; study energy - saving technologies and the development of new energy technologies
热能工程是以工程热物理学科为主要理论基础，以锅炉、汽轮机、内燃机和正在发展中的其它新型动力机械及系统为研究对象，运用工程热力学、传热学、计算机自动控制理论、环境科学、微电子技术、节能技术等学科的知识，研究燃料的化学能和液体的动能安全、高效、低（或无）污染地转换成动力的基本规律和过程；研究能量转换过程中的系统和设备的自动控制技术；研究燃烧污染物生成机理与排放控制技术；研究节能技术与新能源的开发技术。