According to the requirements to the measurement aviation motor by the user , this paper analyzes the measurement principles of torque and rotational speed , and points out that the measuring apparatus composed of optoelectric sensors is more suitable for measuring heavy torque and high rotational speed 根据用户提出的测量航空电机具体要求，本文分析了转矩和转速的测量原理，指出了采用应变式和光电式传感器构成测量仪更适合测量大转矩、高转速电机。
This paper introduces an idea of design and working principle for the phonic realization of wind - tunnel control parameters with the computer of the wind - tunnel control system and a phonic chip . the system structure is simple , economical and practical . the phonic information memorized in analogue has high fidelity effect and is very easy to modify 对火炮身管进行窥膛检测是常规靶场经常进行的试验项目，本文从工程实现方面详细论述了新型光电式火炮身管窥膛检测系统的组成、功能、工作原理和目前所达到的技术指标。
