免费的又色又爽又黄的片,亚洲香蕉伊在人在线观婷婷,欧美在线乱妇一级毛片,无满14萝祼体洗澡视频,亚洲自拍偷拍视频

2MK2225X3000 is a newly developed large-diameter and long stroke inner hole drilling machine tool by our company to meet market demand. The maximum drilling diameter is 250m and the maximum drilling depth is 3300m. Hydraulic or screw reciprocating can be selected according to user needs. The equipment adopts a sunken foundation with an underground depth of 4150m and an above ground height of 6500m. The worktable moves forward and backward with an area of 1050X1050m and a stroke of 500m, driven by oil cylinders. Servo adjustable fixture that can adjust the height of the fixture according to different lengths of workpieces, making it easy to clamp the workpieces. Equipped with a belt locking mechanism to prevent the workpiece from rotating and damaging due to insufficient clamping force.