back pitch
英
美
- back n.后面;背脊;靠背;后背;后卫vt.支持;后退adv.向后地adj.向后的;后面的;偏远的;过时的;积欠的
- pitch n.球场;程度;音调;推销;投掷;街头商贩摊位;沥青;树脂;松脂v.投;颠簸;搭帐篷;定调;推销;用沥青覆盖
- Convolutions frequently alternate in direction of rotation and vary in pitch.
盘旋经常改变回转方向和节距。
- The straightening effect of straightener can be improved along with the change of pitch.
采用改变节距的方法,提高矫直机的矫直质量。