功

• In motion with a fixed frictionless constraint, no work is done by the constraint .
  在固定的无摩擦约束运动中，约束力不作功。
• Complete recoverability is an important aspect of the work of a conservative force .
  这种完全回收性质是保守力的功的重要表现。
• Work is defined not at an instant or at a point but over an interval .
  功不是在某一瞬时或某一点定义的，而是在一段距离上定义的。
• We are going through the first three acts, and not unsuccessfully upon the whole .
  我们先排练完前三幕，总的说来，还不算不成功。
• The work during any displacement is represented by the area under this curve .
  在任一位移过程中所做的功，由这曲线下的面积来表示。
• To avoid confusion, the product of a force and a displacement will be called a work product .
  为了避免混乱，将力和位移的乘积叫乘积功。
• The surface energy of a material is the work done separate two surfaces to infinity .
  一种材料的表面能乃是将两表面分离至无穷远所做的功。
• In the absence of frictional energy dissipation, input work and output work are equal .
  没有摩擦力所引起的能量消耗时，输入功等于输出功。
• The dam must be closed before the rainy season sets in , or all our labour will be lost .
  大坝一定要在雨季开始以前合拢，否则就会前功尽弃。
• Their argument is based on the plastic work wp being the controlling factor in hardening .
  他们的论点是基于在硬化中的塑性功Wp是可控制的因子。