计数

• Changes in the beam intensity will produce changes of the count rate .
  电子束强度变化将引起计数率的变化。
• We count the number of photos arriving at d1 without the mirror .
  我们对没有放入镜子时达D1的光子进行计数。
• At the end of the count the sample is ejected into a shielded store .
  计数完毕，样品被送入一个屏蔽的储存器内。
• A great profusion of scalers and ratemeters is available commercially .
  在市场上也可以买到大量的定标器和计数率计。
• We shall also have to do a counting operation, so that we know when to stop .
  我们还须进行计数，才知道什么时候结束。
• A drop of ditch-water harboured a whole community of innumerable tiny creatures .
  一滴污水中藏有各种难以计数的微生物。
• The new counting cell positions are used to generate additional pole counts .
  计数单元的新位置就用来形成新补充的极点数。
• A vortex cage located in the vortex counts the revolutions of the vortex pool .
  放置在涡流中的涡流笼圈计数出涡流源的转数。
• Other enumeration problems lead us to the study of orbits of permutation groups .
  其它的计数问题引导我们去研究置换群的轨道。
• The mesh points are numbered with index k in the order in which the unknowns are considered .
  网格点按所考虑的未知量以脚标k来计数。