1·Thermal mass flow sensor has unique constant temperature principium as mathematical model for measuring medium mass flow without compensation of temperature and pressure.
采用独特的恒温原理建立数学模型，测量出介质的质量流量，无须温度和压力补偿。
2·According to specifications, sea clutter testing 2.4 m antenna system's principium is given, and the mechanism design of antenna reflector, antenna pedestal and feed system is studied.
本文根据技术指标要求，给出了海杂波测试2.4米天线系统的工作原理，探讨了天线反射体、天线座架及馈源系统的结构设计。
3·The aerodynamic pressure expression at jet location and in the area of jet interaction is established by blast wave principium.
采用爆炸波原理建立了喷流区和喷流干扰区的气动压力计算模型。
4·It is pointed that design principle and processing principium for stable twisting moment tapping machine. And reliability of the construct is confirmed through testing of self made tapping machine.
提出定扭矩攻丝机的设计原则，阐述了工作原理，通过自制攻丝机试验证实了该结构的可靠性。
5·This article describes the principium of line scan revise winding used in the line scan circuit of TV receiver and display, and the requirement for the characteristics of the ferrite core.
介绍了在电视接收机、显示器行扫描电路中的磁饱和电抗元件(行线性校正线圈)的原理及对铁氧体磁芯材料性能和工艺的要求。