Loggerhead turtles sense latitude by the planet's magnetic field intensity, and new research finds they're good at determining their longitude too, probably via the field's inclination.
2
用来测量地球磁场强度和方向的仪器。
An instrument used to measure the strength or direction of the Earth's magnetic field.
3
通过求解磁场强度的变化，发现磁场强度最低点随一次地网和二次地网连接点的相反方向漂移的规律。
And then found the law that the lowest magnetic field intensity point location will drift to the opposite direction to primary grounding network and secondary grounding network junction moving.
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