magnetic needle

常见例句

用作名詞 (n.)

• The needle of the compass shows that we're facing south.
  指南針上的磁針顯示我們処在朝南的位置。
• The rectangular brass frame surrounds a high-visibility magnetic needle that pivots on an adjustable support.
  一個清楚可見的磁針以一可移動的軸支撐，旁邊的矩形框架是黃銅制成的。
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