particles

• A particle strikes a nucleus .
  粒子撞击原子核。
• These fine particles also settle according to stoke's law .
  这些细泥沙按斯托克斯定律下沉。
• After adherence, the particle is enveloped by cell membrane .
  附着之后，粒子被细胞膜包裹。
• Points p and q represent two positions of the particle .
  P点和Q点分别表示该质点的两个位置。
• A particle passing through the scintillator produces excitations .
  粒子通过闪烁体引起激发。
• A broader grouping divides particles into families .
  一种比较概括的分类法是把粒子分成几族。
• The effect of neighbouring particles is not taken into account .
  没有考虑到周围颗粒的影响。
• Various family groupings help to unify the study of particles .
  按族分类有助于统一研究粒子。
• The particle is never to be found halfway between the walls .
  在两壁间的中点永远找不到粒子。