back rake

基本解釋

The cleaning rake moves forth and back in line direction. It is specially suitable for coarse suspensions.
除渣耙做直線往復(fù)運(yùn)動(dòng)，對(duì)于粗大懸浮物去除尤為適用。
PDC cutter size, back rake and density are very important design parameters affecting the performance of PDC bit.
PDC切削齒尺寸、后傾角和布齒密度是影響PDC鉆頭性能的重要設(shè)計(jì)參數(shù)。
A study is made on the working angle in scraping process, practical Calculations are taken up to the angle of working edge, rake angle and back angle. Some patterns of such change are found out.
本文對(duì)刮削過(guò)程中工作角度問(wèn)題進(jìn)行了探討，并對(duì)工作刃傾角、工作前角和工作后角進(jìn)行了具體計(jì)算，得到了一些變化規(guī)律。

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That would really tip the playing field against high-benefit cards that rake off as much as 3% of sales revenue and hand much of it back to consumers in rebates, air miles or other lagniappe.
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