| 单词 | magnetic needle |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔damper〕A device that eliminates or progressively diminishes vibrations or oscillations, as of a magnetic needle.阻尼器，避震器：用来消除或逐渐消除震动或摆动的设备，如磁针的美国传统〔galvanoscope〕An instrument used to detect the presence and determine the direction of electric currents by the deflection of a magnetic needle.验电器：一种利用磁针的偏传检测电流存在及测定其方向的仪器美国传统〔magnetic north〕The direction of the earth's magnetic pole, to which the north-seeking pole of a magnetic needle points when free from local magnetic influence.磁北：地球磁极的方向，当不受当地磁场影响时，用来寻找北方磁极指示的方向美国传统〔needle〕A magnetic needle.磁针美国传统 |
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