| 摘要 |
<p>A pump consists of an outer cylinder (1) and inner cylinder (2) in the middle of conically expanded from both sides to the outer wall (1) by dividing the interior of the cylinder (1) into two axially symmetrical halves. The inner cylinder (2) is from each side rotatably diagonally tapered piston (3a), (3b) forming a pair of axially stored on the central inner cylinder (2) so that the tapered part of the inclined piston (3a) and (3b) form mutually parallel plane.</p> |
