^pof;
Engineering;
Sciences,;
GIK;
Institute;
of;
Engineering;
Sciences;
and;
Technology,;
Topi,;
Swabi,;
Khyber;
Pukhtoonkhwa,;
Pakistan;
^pof;
Basic;
Sciences,;
University;
of;
Engineering;
and;
Technology,;
Peshawar,;
Khyber;
Pukhtoonkhwa,;
Pakistan;
万有引力; 向量场; 类型; 空间; 广义相对论; 集成技术; 时间;