Most crystals are hexahedrons &octahedrons.With complete crystal forms, the products have higher static pressure strength and toughness index values.是什么意思_Most crystals are hexahedrons &octahedrons.With complete crystal forms, the products have higher static pressure strength and toughness index values.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句