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

wolframite

音標['wulfr?mait]
wolframite是什么意思、wolframite怎么讀

wolframite漢語翻譯

n. 鎢錳鐵礦
【化】 黑鎢礦

wolframite英語解釋

名詞 wolframite:

  1. a mineral consisting of iron and manganese tungstate in crystalline form; the principal ore of tungsten; found in quartz veins associated with granitic rocks
    同義詞:iron manganese tungsten

wolframite詳細解釋

wolf.ram.ite

n.(名詞)
Any of several red-brown to black minerals with the general formula (Fe,Mn)WO4, which constitute a major source of tungsten.
黑鎢礦:幾種紅褐到黑的礦物,分子式為(Fe,Mn)WO4,主要含鎢的來源

0
糾錯