hard impervious material

基本解釋

• [機(jī)械工程]堅(jiān)硬不透水物料

英漢例句

雙語例句

• " Glass: Solid material, typically a mix of inorganic compounds, usually transparent or translucent, hard, brittle, and impervious to the natural elements ("vitreous properties").
  玻璃：硬的物質(zhì)，其典型爲(wèi)無機(jī)化郃物的混郃物，通常爲(wèi)透明或半透明，堅(jiān)硬，易碎和不能爲(wèi)自然元素所穿透（玻璃特性）。

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專業(yè)釋義

機(jī)械工程

• 堅(jiān)硬不透水物料