The inductance expression obtained in the dissertation can offer theoretical guidance to the design of the air-cored solenoid coil.
本论文所得到的电感解析表达式，可为空心圆柱线圈的设计提供理论指导。
2
The popular non destructive test methods for the foam-cored sandwich structure are reviewed; including air coupled ultrasonic method, pulse-echo ultrasonic method and shearogragh method.
回顾了泡沫夹层结构常用的无损检测方法：空气耦合超声方法、脉冲回波超声方法以及激光错位散斑干涉方法。
3
Several methods for calculating the inductance of the aircored cylindrical coil are introduced. A coil is made for checking the methods as above.