英语词汇“compass card”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

compass card

noun

A circular rotating card showing the 32 principal bearings, forming the indicator of a magnetic compass.Compass makers compensate for dip error by intentionally unbalancing the compass card / magnet assembly to the degree needed to provide optimum accuracy in a range of latitudes....

Thanks to less-than-adequate instrument lighting, I barely could read my BDHI compass card and couldn't see the DME.
It can be used to determine if DC current is flowing in a circuit by moving it up against one of the two wires in a circuit and watching for a movement of the compass card.

单词	compass card
释义	compass card noun A circular rotating card showing the 32 principal bearings, forming the indicator of a magnetic compass.Compass makers compensate for dip error by intentionally unbalancing the compass card / magnet assembly to the degree needed to provide optimum accuracy in a range of latitudes.... Thanks to less-than-adequate instrument lighting, I barely could read my BDHI compass card and couldn't see the DME. It can be used to determine if DC current is flowing in a circuit by moving it up against one of the two wires in a circuit and watching for a movement of the compass card.
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