Where misalignment between the inner and outer rings exceeds 1 minute of arc, the action of the load on the flange changes considerably.

内圈和外圈之间的不对中超过1分弧时，作用在法兰上的载荷会发生相当大的变化。

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The circular arc automatic door is reciprocating swing, and its motion parameters are the number of swing per minute, the size of the swing Angle and the travel speed ratio coefficient.

圆弧形自动门是往复摆动，其运动参数是每分钟摆动次数、摆角大小和行程速比系数等。

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Degrees are divided into minutes (sixtieths of a degree) and seconds (sixtieths of a minute) of arc, so that there are 3, 600 seconds of arc, or arcseconds, in one degree.

ECONOMIST: A roadmap for planet-hunting