首摇 meaning in English

yawing oscillation

Yaw - angle gyroscope
首摇角陀螺仪
Yaw rotating test
首摇旋转试验
3 . the magnitudes of anchor chain tension caused by heave and pitch is small . so is the effect on dragging anchor . 4 . the depth of water , which anchored ship requires , is to large extent affected by heave and pitch
水深对横荡和首摇运动影响较大，水深增加，横荡和首摇运动幅度增大，因此，对锚链冲击力增大，即对走锚的影响较大。
The results are of more precision by adopting the latest achievements . conclusions are drawn by a large number calculation . 1 . to large extent , the magnitudes of sway and yaw are affected by the depth of water , so is that of anchor chain tension ; the magnitudes of sway and yaw are smaller in the shallows than in the deep , so is that of anchor chain tension ; 2 . to small extent , the magnitude of heave and pitch is affected by the depth of water
该数学模型突破了以往数学模型的局限性，不仅考虑了纵荡、横荡、首摇运动，还考虑了垂荡、纵摇运动；在该数学模型中还考虑了浅水的影响，对模型中受浅水影响较大的部分作了浅水修正；在计算各外力时，采用最新研究成果，使计算结果更加准确；通过大量计算得出一些很有意义的结论： 1