Fine adjustment is especially important in this case as the ball size is relatively large in comparison to the ball pitch.
当球大小对球程度在比较中是相对地大的时候，罚款调整在这情况尤其重要。
2
Pulleys are on the market that permit an adjustment in the width of the groove. The effective pitch diameter of the pulley is thus varied, and moderate changes in the speed ratio can be secured.
The paper analyzed the correlation of pitch angle and roll angle, which were measured by magnetic head flying angle adjustment apparatus, and introduced a method of angle adjusting.