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在钻进过程中，机上钻杆往往摆动非常大，因此，容易使钻杆打弯，发生事故。怎样才能使钻杆摆动不过大呢？我认为：
In the drilling process, the drill pipe often swing very large, therefore, easy to drill pipe bending, accidents. How to make the drill pipe swing is not big? I think: