[化] 脉动(泵送石油产品时)

Lope \Lope\, v. i. [imp. & p. p. {Loped}; p. pr. & vb. n.
{Loping}.] [See {Leap}.]
1. To leap; to dance. [Prov. Eng.] ``He that lopes on the
ropes.'' --Middleton.

2. To move with a leaping or bounding stride, as a horse.
[U.S.]

3. To run with an easy, bounding stride; -- of people.
[PJC]