| Chinese | English |
| 二冲程发动机 | two-stroke engine An internal combustion engine whose cycle is completed in two strokes of the piston (一种内燃发动机，其循环是通过两个活塞冲程完成。) |
| 发动机 | engine A machine in which power is applied to do work by the conversion of various forms of energy into mechanical force and motion (借助将各种形式的能量转变为机械能并运转，从而使得动能能应用于做功的机器。) |
| 发动机燃料 | motor fuel Any gaseous or liquid flammable fuel that burns in an internal combustion engine (任何内燃机使用的可燃气体或液体燃料。) |
| 四冲程发动机 | four stroke engine An internal combustion engine whose cycle is completed in four piston strokes; includes a suction stroke, compression stroke, expansion stroke, and exhaust stroke (内燃机，其周期是由四个活塞冲程完成;包括吸气冲程、压缩冲程、膨胀冲程和排气冲程。) |
| 天然气发动机 | gas engine An internal combustion engine that uses gaseous fuel (使用气体燃料的内燃机。) |
| 机动车 | motor vehicle A road vehicle driven by a motor or engine, especially an internal-combustion engine (由马达或引擎，特别是内燃发动机，驱动的道路车辆。) |
| 机动车污染 | motor vehicle pollution Pollution caused by gases vented to the atmosphere by internal-combustion-engine driven vehicles (污染由内燃发动机驱动的车辆排放气体到大气中造成。) |
| 机动车辆工业 | motor vehicle industry No definition needed (无需定义。) |
| 机动车辆废气 | motor vehicle exhaust gas Gases vented to the atmosphere by internal-combustion-engine driven vehicles (排放到大气中的气体产生于内燃机引擎驱动的车辆。) |
| 机动车辆排放物 | motor vehicle emission The formation and discharge of gaseous and particulate pollutants into the environment chiefly from car, truck and bus exhaust (进入环境的气态和颗粒污染物的排放主要来自汽车、卡车和公共汽车废气。) |
| 机构活动 | institutional activity The specific tasks, undertakings or functions that governments, businesses and other organizations perform (政府、企业或其他组织执行的具体的任务、工程或者机能职责。) |
| 机械振动 | mechanical vibration A motion, usually unintentional and often undesirable, of parts of machines and structures (一种机器和结构部分的运动，通常是偶然的、不合需要的。) |
| 汽油发动机 | gasoline engine An internal combustion engine that uses a mixture of air and gasoline vapour as a fuel (使用空气和汽油蒸气的混合物作为燃料的内燃机。) |
| 环境动机 | environmental incentive |
| 行政行为动机 | motivation of administrative acts The underlying reason or cause, a psychological or social factor, that incites or stimulates managers, executives or supervisors to complete tasks that achieve organizational or company goals (激励或鼓舞管理人员、行政人员或监管人员完成任务以实现组织或公司目标的心理或社会因素的原由。) |
