免费成人A片免费看|亚洲有码视频在线观看|美女毛片视频激情超碰|91精品国产欧美一区二区成人|久久无码精品一级A片一高潮不断|亚洲性爰专区三级片不卡免费|欧洲另类AV无码国产免费看|免费观看黄片视频|三级黄色网片在线|国产精品一区二区三区网址

單詞乎

law of definite proportions

law of definite proportions是什么意思、law of definite proportions怎么讀

law of definite proportions漢語翻譯

【化】 定比定律

law of definite proportions英語解釋

名詞 law of definite proportions:

  1. (chemistry) law stating that every pure substance always contains the same elements combined in the same proportions by weight
    同義詞:law of constant proportion
0
糾錯