这些是弯线。
钳子、弯线、大力钳和其它一些设备也有助于对型材起支撑和导送作用。
Clamps, bent wires, vise grips, and other devices can also help to support and guide the profile.
在黄土塬区或复杂的黄土地形区作煤田地震勘探工作需要进行沿沟弯线地震施工技术的研究。
Coal field seismic prospecting in loess plateau or complicated loess topographic area needs going on the research of crook seismic working technology along channel.
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