Li Yuhua, Liu Huai, Zhang Chuming, Zhou Xinhu, Ma Guilan. Led clock-controlled pulse calibrator[J]. North China Earthquake Sciences, 1997, 15(1): 75-77,80.
Citation:
Li Yuhua, Liu Huai, Zhang Chuming, Zhou Xinhu, Ma Guilan. Led clock-controlled pulse calibrator[J]. North China Earthquake Sciences, 1997, 15(1): 75-77,80.