键

• The energy is dissipated by subsequent bond cleavage reactions into various "daughter ions" .
  这种能量消耗在后续的键断裂成各种“子离子”的反应中。
• The relationship between bonds and cotrees is analogous to that between cycles and spanning trees .
  键和余树之间的关系类似于圈和生成树之间的关系。
• The data ready line can be used to flag the processor when a keystroke is ready to be read .
  当按下的键准备读出时，数据准备线可用来作处理器的标志。
• The latter arises from abstraction of the somewhat lesser activated c-h bond in the dioxolane .
  后者是由二氧杂环戊烷中活化较弱的C-H键离解而产生的。