1)anomaly,异常;不规则;变态;破格;近点角;近点距离2)anomaly,异常;近点角3)anomaly,异常，反常近点角，近点距4)anomalistic adj.,不规则的;反常的;近点的5)argument of perigee,近地点角距6)the near distance spot,最近距离点
用法例句
A new algorithm to calculate the near distance spot of adjacent well by using cylinder helix method;