Only on weekends- Centring Park is closed to cars.

唯有在周末的时期，中央公园不对汽车关闭。

Fix the centring glass ball now into the precision holder.

把定心玻璃球装到精密固定器上。

The turntable possesses 2 adjusting elements for the basic centring.

转台拥有2个可调元件用于定心。

The effect of the centring errors is usually very small and can be neglected.

认为这种误差的影响很小，实际上可忽略不计。

In principle centring errors are measurable in transmitted light and in reflection.

原理上定心误差在光传播和光反射里是可测的。