作旋转的心脏线和旋转的星状线,且彼此维持正交.Construct rotating cardioid and astroid while remaining orthogonal to each other.作旋转的心脏线和旋转的三角线,且彼此维持正交.Construct rotating cardioid and deltoid while remaining orthogonal to each other.作旋转的心脏线和旋转的肾...
温度传感器密封在保护套管中.The temperature sensor is enclosed in a protective well.套管被送入软岩粉顶.The casing was driven into the soft muds in the top.使用特制导向套管来保证较高的打眼精度.Special guide sleeves are used to obtain greater precision in drillin...