力学

• They direct the attention of research workers to this important but barren area of mechanics .
  把研究工作者的注意力引向这一重要的但是很荒疏的力学领域。
• The analysis of cracking in steel bridges can usually be accomplished by using linearelastic fracture mechanics .
  通常可用线弹性断裂力学进行钢桥裂纹分析。
• Fracture mechanics can be used to determine the conditions in which a rapidly propagating crack can be arrested .
  断裂力学可用来确定制止裂纹快速扩展的条件。
• Mechanical changes and sometimes lithological changes, take place in the rocks on either side of the fault .
  断层两边岩层发生机械力学变化，有时也有岩性变化。
• Classical mechanics and electromagnetism were inadequate to explain the motion of electrons with the atom .
  经典力学和经典电磁学不足以解释电子在原子内的运动。
• The mechanical creep in photoelastic models is accompanied by a variation with time of the optical effects .
  光弹性模型中的力学蠕变，伴随着光学效应随时间的变化。
• In attempting quantitative quantum mechanical treatment of chemical bonds, approximations must be made .
  在试图定量地用量子力学去处理化学键时，人们必须采用近似法。
• Quantum mechanics showed classical mechanics to be incorrect for describing the internal motions within atoms .
  量子力学证明，用经典力学描述原子内部的运动也不正确。
• It was once widely believed that living organisms might be exempt from the second law of thermodynamics .
  人们曾一度广泛相信，活着的有机体不受热力学第二定律的制约。