The Chinese used a gravity meter to correct for local deviations in sea level.
中国人用重力仪来校正海平面的局部偏差。
A new gravity-flow meter under controlling of a single chip computer is introduced.
本文介绍了单片机控制下的一种新型重量式流量计。
A new gravity-flow meter under controlling of a single chip computer is introduced.
本文介绍了单片机控制下的一种新型重量式流量计。
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