The central focus point is more accurate/sensitive in many cameras, and so it is best to use this (instead of the outer focus points) — even if using it requires having to recompose afterwards.
中心对焦对许多相机而言更为精确敏感,所以最好使用中心对焦而不是外部对焦——即便对焦后需要重新调整稳定。
If a small potential difference exists between two ground points, some ground currents may flow through a sensitive part of the system.
如果在两个接地点存在一个小的电势差,在系统的敏感部分就会有接地电流通过。
In addition, he points out that it also means that users can print onto heat-sensitive substrates such as corrugated board and very thin films that can warp, curl or melt due to high heat.
另外,他也指出,这也意味着用户可以在热敏材料基板上打印,例如波纹纸板和一些遇到高温会弯曲,变形的薄膜材料。
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