用DZ664基地回放四次以上的多次复盖,速度慢,质量差。为提高叠加水平,我们重新安排了程序,焊接了新的程序控制线路。使目前大量使用的三鼓基地适应六次至十二次的多次复盖,改革后多次复盖的回放速度,叠加质量基本上可与DZ702七鼓基地相比(图11为改革后的新的程序控制线路)。 Use DZ664 base replay more than four times cover, slow, poor quality. To improve the level of overlay, we rearranged the program, welding a new program control line. So that the current extensive use of three drum base to adapt to six to twelve multiple cover, cover many times after the reform of the playback speed, the stacking quality is basically comparable with the seven drum base DZ702 (Figure 11 for the reform New program control line).