Sentence Examples


  • RB: The life jacket is currently pending US Coast Guard approval, thus it will meet all the requirements of a certified Type III Personal Flotation Device (PFD).
  • Highwater PFD: An ideal combination of a fishing vest and life vest, without compromising motion or comfort.
  • For a single pulley of diameter D, turning on a fixed pin of diameter d, the relation of the effort E to the load W, where f is the coefficient of friction, is expressed by E/W = (D-pfd)/(D - fd) _ 1 +2fd/D approximately.