Computer calculates a theoretical taping Angle based on the geometry of tape head, tape roll width and overlap.
依据包带头的几何形状，带宽及叠包率，计算机自动算出包扎角度的理论值。
The light-plate that is shot by semiconductor laser comes to a certain Angle to throw overlap joint, which brings a single vein of light, and CCD camcorder shoots and sends it to the computer.
半导体激光器发出的激光经过柱透镜形成一出射光片。它与母材成一定角度投射到接头上，光片与搭接接头会成一单光纹，而母材垂直上方的CCD摄像机拍摄折线光纹，同步送计算机处理。
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