PDC cutter size, back rake and density are very important design parameters affecting the performance of PDC bit.
PD C切削齿尺寸、后倾角和布齿密度是影响PD C钻头性能的重要设计参数。
Measurable parameters include the coordinates of the circle center of the cutter teeth compact and the compact's back rake Angle and side sway Angle.
可测量的位置参数有切削齿复合片的圆心坐标及负前角、侧偏角等。
Then I tamp down the soil with the back of a rake.
然后我用耙背将土壤拍实。
On Christmas Day, when people ask why I’m there, I might say, “My sister’s been in the hospital,” or, “My brother’s off to war, so we’re celebrating when he gets back.” Then I rake in the tips.
在圣诞节，当人们问我为什么还在那工作的时候，我会说，“我姐姐住院了”或“我哥哥服兵役去了，我们打算在他回来的时候再庆祝”，这样我就能够迅速得到小费。
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.
本文对刮削过程中工作角度问题进行了探讨，并对工作刃倾角、工作前角和工作后角进行了具体计算，得到了一些变化规律。
The cleaning rake moves forth and back in line direction. It is specially suitable for coarse suspensions.
除渣耙做直线往复运动，对于粗大悬浮物去除尤为适用。
The cleaning rake moves forth and back in line direction. It is specially suitable for coarse suspensions.
除渣耙做直线往复运动，对于粗大悬浮物去除尤为适用。
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