久青草国产手机视频免费观看_毛片网站是多少_亚洲视频中文_一区二区高清在线

首頁英語詞典sodiumsodium英英釋意

sodium

英 ['s??d??m] 美['sod??m]
  • n. [化學(xué)] 鈉(11號元素,符號 Na)

英英釋意


1. a silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); burns with a yellow flame and reacts violently in water; occurs in sea water and in the mineral halite (rock salt)