friction

• The air molecules making up the earth's atmosphere create friction and tend to slow a rocket .
  组成地球大气层的空气分子会产生摩擦力，并会促使火箭减速。
• Variations in surface roughness of both guide and fiber surfaces have a marked effect on friction .
  导纱器和纤维表面粗糙度的变动，对摩擦力都有显著影响。
• This we can do by means of a marvelous invention called an air trough which gets rid of friction .
  我们可以利用一个称为气垫的惊人的发明来做实验，它能摆脱摩擦力。
• A great number of methods for measuring friction of yarns and fibers have been described in the literature .
  在文献资料中曾经介绍了许多测定纱线和纤维摩擦的方法。
• To prevent damage, the observer will choose a friction clamp or better still an adjustable clamping ring .
  为防止损坏，观测者应采用摩擦夹紧方式，用可调夹圈更好。
• In most machines friction consumes effort , with the result that less work is got out than is put in .
  在大多数机器中，摩擦要消耗功，以致造成输出的功要小于输入的功。
• The work of the friction force does depend on the path; the longer the path between two given points, the greater the work .
  摩擦力的功则取决于路径，路径越长，功越大。
• Torsional microslip at the clamps results in spurious torques which act like pivot friction torques .
  夹紧处扭杆的微小滑移会产生干扰力矩，它的作用和轴颈的摩擦力矩一样。
• Figure 2-1 represents a flat, rigid object of arbitrary shape on a level surface having negligible friction .
  图21表示一个任意形状的扁平刚体，放置在无摩擦的水平面上。