动力

• The aerodynamic forces on any control surface produce a moment about the hinge .
  在任何操纵面上的空气动力均产生围绕其铰链轴的力矩。
• The worldwide loss of momentum in improving living conditions is not encouraging .
  全世界已经丧失了改善生活的动力，确实是令人沮丧的。
• From its first day to this, sheer greed was the driving spirit of civilization .
  卑劣的贪欲是文明时代从它存在的第一日起直至今日的动力。
• The dynamics of the feed system are also an integral part of feed system coupled modes .
  供应系统动力特性也是供应系统耦合振型的主要部分。
• At the prospect of losing his great motive ralph lost indeed his one inspiration .
  现在眼看这伟大的动力就要失去，拉尔夫确实感到心灰意懒。
• He was no mere creature of circumstance, but rather a prime moving force in history .
  他不仅是一位时势造成的英雄，更是一种主要的历史动力。
• Moreover, the power interests quietly hired a number of college professors for public lectures .
  此外，动力界还秘密雇用一些大学教授公开讲演。
• Balloons have to fly with the wind as they have no engines to drive them against it .
  气球只能顺风飘行，因为气球没有发动机提供动力作逆风飞行。
• Industrial power, the energy that turns machines, is being developed, at last, for human use .
  工业的动力，既转动机器的能力，终于被用来为人类服务。