This paper deals with a displace of focusing line position which is caused by change of solarhour angle when a long axis of FMSC is placed in east-west direction.
本文讨论了当固定条形镜面聚光器长轴沿东西向放置时,太阳时角变化所引起的焦线位置的移动。
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That's pretty cool! The propellers lifted off the ground at 28 miles per hour. And they say there are 12 solar cells built into its wings.