The principle and method of testing oil body humidity are discussed, according to the changed trait in resonance frequency and quality factor of resonance cavity when microwave acting on oil body.
根据微波通过油体后，谐振腔的谐振频率和品质因数均会发生相应的变化的特点，探讨了测量油体湿度的原理及所采取的方法。
Normalization method of ultrasonic testing signal, the advantages and disadvantages of time domain, frequency domain were discussed.
探讨了超声波检测信号归一化处理的方法，以及时域信号归一化和频域信号归一化的优缺点。
This edition of BS 5099 introduces a clause on calibration frequency, together with an associated annex on the procedure for checking the efficacy of the method of spark testing.
此版本的BS 5099在附件里增添了火花试机的校准周期以及校准的方法和程序。
应用推荐