They use secret code names like 'x' and 'y' and refer to themselves as' unknowns', but we have determined they belong to a common denominator of the axis of medieval with coordinates in every.
他们使用“X ”和“Y”这样的密码，自称“未知”。但是我们确定他们在每个国家都属于一个以共同分母为轴心的中世纪坐标。
A system of coordinates in which a point is located by its distance and direction (Angle) from a fixed point on a reference line (called the polar axis).
一种用点离基准线上(称极轴)固定点的距离和方向(角度)来表示点位置的坐标系统。
According to measuring the coordinates of each span of long span double arched bridge, the arch axis for every span is determined.
通过测量拱腹各点坐标来确定双曲拱桥每孔的拱轴线。
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