The image information of aluminum liquid filling mould process is observed and recorded by the transparentquartz pyrex window for analyzing the aluminum liquid filling mould process.
采用透明的耐高温石英玻璃观察窗，观察和记录铝液充型过程的图像信息，分析铝液的充型过程；
2
The transparent colourless variety of quartz is still known as rock crystal .
透明无色的水晶仍然是被称为：白水晶。
3
A mineral, especially a transparent form of quartz, having a crystalline structure, often characterized by external planar faces.