The arrow penetrated through the centre of target.
箭穿透靶心。
《新英汉大辞典》
2
Beam riding systems use a target tracker whose purpose is to maintain the antenna boresight pointing at the centre of the reflecting area of the target.
波束制导系统使用一个目标跟踪装置，它的目的是保持天线视轴指向目标反射的中心。
3
Corrections are implemented in the machine CNC with the aim of achieving the target position for the tool centre point.