proper vector

In this paper, the change of total momentum of heated object at uniform velocity is analyzed and the objective fact of producing time-like leading-force 4-vector only because of changing proper-mass is pointed out.

本文分析了匀速物体在受热过程中的总动量的变化，指出仅因改变静质量而产生4维类时引导力的客观事实。

Countermeasures about avoiding or reducing instability of gene engineering cell were discussed, which include construction of suitable vector, selection of proper host, infliction of selective pressure, controlling fermentation conditions and excessive expression of foreign gene, etc.

探讨了防止或降低基因工程菌不稳定性的对策，包括组建合适载体、选择适当宿主、施加选择压力、控制基因过量表达及控制培养条件等。

The proper project of electromagnetic vector in vector wave function space

矢量波函数空间的电磁矢量恰当射影

By means of differential geometry, this article recognizes tensor field on manifold and its covered vector field, scalar field further, at the same time uncovers and depicts the inherent proper curvature meaning of the relativity background space-time ( IR~ 4,η).

从近代微分几何角度，进一步认识张量场及其所涵盖的标量场和矢量场，揭示刻画相对论时空背景的内禀曲率意义；