One way to increase the efficiency of a high-bypass jet engine is to turn the fan into an open rotor, a bit like returning to propellers, but using two rings of stubby counter-rotating blades.
提高高旁通飞机引擎的方法之一就是把风扇变成开放式旋翼，有点回归于螺旋桨的味道，但要使用两圈粗短的反旋桨叶。
A high performance electromagnetic counter-force actuator is designed for engine active vibration control system.
针对发动机振动主动控制系统设计了一种高性能电磁反力作动器。
Calibration relationship between compressure ratio and digital counter reading can be used to evaluate the spark-ignition engine.
采用压缩比与数字计数器的对应检索校正关系来评定检查火花点燃式发动机的机械状况。
Hao USES an ancient Chinese script called "Xiao Zhuan" to engrave a name plaque for each edition as well as mark the car throughout, such as on the engine start button and the rev counter.
郝用一个古老的汉字称为“小篆”，以刻为每一个版本的名称牌匾，以及纪念车在整个例如在发动机启动按钮和转速。
It is shown that the error of transient engine speed measurement comes from both the time interval counter and crank angle measure.
瞬时转速测量的主要误差为晶振脉冲计数误差和转角计量误差。
The contra-rotating turbine disks of an aero-engine were simplified as a counter-rotating plan disk system.
将反向旋转的高低压涡轮盘简化成了几何形状相对简单的反转盘系统。
The contra-rotating turbine disks of an aero-engine were simplified as a counter-rotating plan disk system.
将反向旋转的高低压涡轮盘简化成了几何形状相对简单的反转盘系统。
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