Subsidiaries of Nippon SheetGlass and others have also faced unrest.
日本板硝子株式会社和其他公司的子公司都面临着同样的问题。
2
And the Corning Web site seems to confirm that this is special stuff: "Gorilla glass is an environmentally friendly alkali-aluminosilicate thin-sheetglass."
康宁公司网站貌似证实，这是一种特殊材料：“Gorilla玻璃，是环保的碱性铝硅酸盐薄板玻璃。”
3
The method can detect the warp by observing the distance between the two images reflected from the precision sheetglass and the standard plate for the same reference object.