1) Back arc
背弧
2) back arc
背弧度
1.
This paper analyzed how to use reflective high frequency non contact eddy sensor for detecting the tension and back arc of band saw,in the circuitry principle,and presented its benefit for mending band saw after the detector is used.
该文就非接触高频反射式涡流传感器用作带锯条非接触检测的电路理论和工作原理进行了分析，介绍了该仪器用于修锯行业作适张度、背弧度检测的优点。
3) blade back
叶片背弧
补充资料：背对背
背靠背。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。