magnetic needle

常见例句

用作名词 (n.)

• The needle of the compass shows that we're facing south.
  指南针上的磁针显示我们处在朝南的位置。
• The rectangular brass frame surrounds a high-visibility magnetic needle that pivots on an adjustable support.
  一个清楚可见的磁针以一可移动的轴支撑，旁边的矩形框架是黄铜制成的。
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