They are based on the principle of silicon piezoresistive effect, mobility change, and variablecapacitance respectively.
各部分分别基于半导体压阻效应、电阻迁移率变化、极板间电容变化为原理制作而成。
2
A capacitor meter will be needed to read the capacitance from the temporally installed add on variable capacitor.
将需要一个电容计，读取时间安装的可变电容器的电容。
3
Variable capacitors are not normally used in timing circuits because their capacitance is too small to be practical and the range of values available is very limited.