PDF(339 KB)
AUTOMATICAL CALIBRATION INSTRUMENT CONTROLLED BY ALARM CLOCK FOR HORIZONTAL PENDULUM TILTMETER
YE Chuanqian
Journal of Geodesy and Geodynamics ›› 1992, Vol. 12 ›› Issue (3) : 76-80.
PDF(339 KB)
PDF(339 KB)
AUTOMATICAL CALIBRATION INSTRUMENT CONTROLLED BY ALARM CLOCK FOR HORIZONTAL PENDULUM TILTMETER
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