This rotation can be simplified by plotting the positions of the principal sections and principal axis on a stereographic net as described by Jessop and Wells from the rotations recorded.

 
  • 按照杰索普和威尔士所论述的方法,根据记录下来的转动角,把主截面和主轴的位置画到一个极射赤平投影网上,可使上述过程简化。
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