The principle of sensor and meter were introduced.
介绍了测量汽油辛烷值的传感器的原理及仪表。
The testing principle and design of sensor were introduced.
分析了检测原理，介绍了检测传感器的设计。
On this basis, the characteristic of the inductance type sensor and its operation principle are discussed in detail.
在此基础上，详细探讨了电感式传感器的特点和工作原理。
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