It was a bit of a surprise, given that most solar observations show a pattern of about 28 days - the rotation rate of the surface of the sun.

这令人感到小小的惊讶，因为大多数太阳观测显示出一个以28天为周期的模式——这正是太阳表面的旋转周期。

youdao

By this filter, the shift, scale and rotation invariant optical pattern recognition was realized with a high signal noise ratio of correlation output.

用这种滤波器实现了平移、旋转、尺度三重不变光学图像识别，且有较高的信噪比。

youdao

A balanced three-layer sample rotation pattern is presented in this paper to solve the problem of rotation for the quarterly surveys with three-stage sampling designs.

本文构造了一种平衡的三层次样本轮换模式，解决了三阶段抽样季度调查的三层次样本轮换问题。

youdao

Between 1980 and 2000 the pattern was a gentle rotation of peaking at 22 weeks and then declining as economic fortunes improved to 12 weeks.

FORBES: Labor Pains

In 2009, after three years of almost constant hard-drive rotation, all the atoms fell into place in a nice colourful stable pattern on the monitor.

BBC: By Ian Hardy