formulas

• the formula which represents the composition of water is, then, .
  因此，代表水的成分的分子式就是。
• Recent history had washed away the easy consolations and the old formulas .
  现代的历史已经把轻松的安慰和陈旧的公式一扫而光。
• Only a few of the many formulas available will be presented and discussed .
  我们只对许多公式中的一些有用的公式进行介绍和讨论。
• The results are cumbersome and the formulas in the general case cease to be useful .
  其结果很繁而其公式在一般情况是不再有用的。
• The true temperature field is approximated by iterations with this formula .
  用这个公式进行重复演算，就可以趋近于真正的温度场。
• Isomers are defined as compounds having the same formula but different structures .
  异构体被定义为化学式相同而结构不同的化合物。
• We derive the addition formulas for sine and cosine from the arithmetic of complex numbers .
  用复数算术推导了正弦，余弦的加法公式。
• The "unconditional surrender" formula was announced by the president and the prime minister .
  总统和首相宣布了“无条件投降”的定则。
• This was surely a magic formula for old fan as his head ached each time he heard it .
  对老范来说，这就是紧箍咒，每回一听说起保管头痛。
• We shall now show that the change of variable formula for integrals is just as unforgettable .
  我们现在来说明积分的换元公式也一样好记。