Automatic inspection of oil well tubing transverse defects and longitudinal defects is a key means to guarantee the quality of repaired oil well tubing and reduce accidents in oil extraction.

油管是采油工程中的重要构件之一，油管纵、横向缺陷自动检测是保证修复油管质量、减少采油作业事故的关键手段。

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Hot rolling is the key factor for controlling transverse thickness difference, especially edge drop, of non - oriented silicon steel.

热轧是控制无取向硅钢成品横截面厚差偏大、尤其是边部减薄显著的关键工序。

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The crossing bar is one of the key parts of the bogie. It receives transverse direction, longitudinal direction and vertical load during the running of the vehicle.

交叉拉杆是转向架的关键部件之一，在车辆运行中承受横向、纵向和垂向载荷的共同作用。

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