Equally in 1937, during the first half of the 1932 to 1951 super cycle, commodities also suffered a major correction, falling a cumulative 40 per cent before resuming their upwards trajectory.

Finally, the clutch model is verified through an experiment that the end of manipulator runs along a space half circle trajectory in small range, and the advanced compensation methods are proposed.

Half a dozen companies that provide parts for the iPhone also blamed weak demand from Apple for lower-than-expected earnings, causing worries about the company's sales trajectory.