| 摘要 |
<p>The mixing apparatus has a movable and adjustable valve control disk and a firm valve seat disk (2), where the valve seat disk has two opening groups (11,12). The openings groups have pass through openings (ma,w1,w2,mb,k1,k2). The sum of the surfaces of openings (w1,k1) of the two opening groups overlaid by recesses (wn1,kn1) remains constant.</p> |
