20 电荷同力线有何关系？

答：“带负电荷”原子外围电子偏多，向外发出斥力线；“带正电荷”原子外围缺失部分电子，核内引力线外泄 （见《L01粒子今论》文）

20 what relation for the charge and the force-line?

Answer：the physical substance is, “carry negative charge” to be the outer electrons of atom leaning more, send out repulsive force-line to outside； “carry positive charge” to be the outer of atom deleted part electrons, the attracting force-line get escape from the centre of nucleus (see also in article《L01 The modern opinion about particle》)