overbalance perforating过平衡射孔
overbalance detail失衡过重
perforating overbalance正压射孔
overbalance drilling过平衡钻井
zero overbalance零值超平衡
overbalance pressure正压
static overbalance静态正压
overbalance E失去平衡
aerodynamic overbalance气动过量平衡
V-I（不及物动词） If you overbalance, you fall over or nearly fall over, because you are not standing properly. 失去平衡
He overbalanced and fell head first.
他失去了平衡而且头部先着了地。