Operation requirements of vertical borehole drilling, found the process of drill pipe shakes or difficult drilling, stones and other foreign bodies may be encountered, should immediately stop check. 操作时要求钻杆垂直,钻孔过程中如发现钻杆摇晃或难钻进时,可能是遇到石块等异物,应立即停机检查。
To display or hide vertical lines between unit labels, select or clear the tick lines check box. 要显示或隐藏单位标签之间的竖线,请选中或清除“刻度线”复选框。
In this paper, the controller of automatic vertical steering control system for shearer drum is taken as a theoretical model; in addition, the structural diagram and digital simulation algorithm are adopted to design the computer simulation program and check the design rationality of the digital controller. 本文以滚筒采煤机自动控制滚筒调高系统的控制器为理论模型,采用结构图法数字仿真算法编制计算机仿真程序,验证所设计的数字控制器的合理性。
The basic model are calculated and analyzed the main line, in considering the vertical and 0.3 horizontal excitation, lateral and 0.3 longitudinal seismic wave excitation input, and check the results of seismic excitation compared. 计算分析了基本模型主线,在考虑纵向+0.3横向激励,横向+0.3纵向激励的地震波输入下,与单向地震激励的结果进行对比分析。
Such systems included vertical exhaust main pipe, horizontal exhaust branch pipe, range hoods, the roof hood, fire-protection device and check valve. 这种系统包括竖向排气干管、横向排气支管、吸油烟机、防火及防串烟部件和屋顶风帽。