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

natural rubber

natural rubber是什么意思、natural rubber怎么讀

natural rubber漢語翻譯

【化】 天然橡膠

natural rubber英語解釋

名詞 natural rubber:

  1. an elastic material obtained from the latex sap of trees (especially trees of the genera Hevea and Ficus) that can be vulcanized and finished into a variety of products
    同義詞：rubber, India rubber, gum elastic, caoutchouc
0
糾錯