麻豆精品在线久草熟女|色情一区二区三区|国产一级片国产特级片|亚州特级黄片在线免费观看|中文人妻少妇有码Av|日逼黄色毛片久久精品久久日|欧美黄色短片网站|无码在线资源黄色免费看视频|日韩无码1区2区3区|亚洲夜色在线五月天激情影院

單詞乎

first law of motion

first law of motion是什么意思、first law of motion怎么讀

first law of motion漢語(yǔ)翻譯

【機(jī)】 運(yùn)動(dòng)第一定律, 慣性定律

first law of motion英語(yǔ)解釋

名詞 first law of motion:

  1. a body remains at rest or in motion with a constant velocity unless acted upon by an external force
    同義詞：Newton's first law of motion, Newton's first law
0
糾錯(cuò)