调节内钢管的位置，能使斜拉索轴线与预埋管轴线重合。
Regulating the position of the internal steel tube can make the axel of the stay cable and the axis of the embedded tube overlapped.
该两个 抛物线反射镜反射面的轴线重合于公共轴线处，且各反射面焦点重合 于公共焦点处。
The axes of the reflecting surfaces of the two parabola reflectors are overlapped at a common axis, and the focuses of the reflecting surfaces are overlapped at a common focus.
钻套(1)、定位套(4)和定位器(3)的轴线相互重合。
The axes of the drill set (1), the positioning set (4) and the positioning device (3) is in mutual coincidence.
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