日本三级无码啪啪区|午夜视频久久一区久久一|AAAAA一级黄片|日本久久99久久|国际精品AV在线|狠狠2015亚洲一区|美腿丝袜亚洲网站|欧美色多多人人看|国产超碰美女在线|www色色在线色

單詞乎

magnetic needle

magnetic needle是什么意思、magnetic needle怎么讀

magnetic needle漢語翻譯

【化】 磁針

magnetic needle英語解釋

名詞 magnetic needle:

  1. a slender magnet suspended in a magnetic compass on a mounting with little friction; used to indicate the direction of the earth's magnetic pole

magnetic needle例句

  1. A device used to determine geographic direction, usually consisting of a magnetic needle or needles horizontally mounted or suspended and free to pivot until aligned with the magnetic field of Earth.
    指南針用于確定地理方向的設(shè)備，通常包括一個(gè)或多個(gè)水平安裝或懸掛的磁針，可在樞軸上自由活動(dòng)直到與地球磁場(chǎng)在一條線上
0
糾錯(cuò)