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罗盘航向或罗盘航线。未修正磁偏转或磁变。
Compass heading or compass course, before correction for magnetic deviation or magnetic variation.
youdao
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罗盘航向或罗盘航线。未修正磁偏转或磁变。
Compass heading or compass course, before correction for magnetic deviation or magnetic variation.
youdao