The invention discloses a novel rail-straightening machine capable of effectively improving a straightening dead zone of a rail, and avoids waste caused by cuttingoff the straightening dead zone.
本发明公开了一种可有效改善钢轨矫直盲区的新型钢轨矫直机，避免将矫直盲区切除造成生产浪费。
2
If the discharge pressure is normal, so, don't answer the artifacts, cutting with high pressure cut-off valve pressure, see if we can keep pressure testing machine itself.
如果泄压口正常，那么，不接工件，用高压截止阀截断压力，看试验机本身能否保住压力。
3
Another miner who had worked in a section affected by the explosion said methane levels frequently set off detectors, forcing the automatic shutdown of a coal-cuttingmachine.