The techniques needed to lead and fix his own glass had barely changed.
他固定和修复自己的玻璃所需要的技术几乎没有什么变化。
Including the radiation lead glass, lead plate glass.
包括防辐射铅玻璃，铅板玻璃等。
Lead in optical and filter glass.
光学玻璃及滤光玻璃中所用的铅。
The change in structure of glass tank can lead to change in glass flow pattern.
熔窑结构的变化必然会引起玻璃液流结构的变化。
The change in structure of glass tank can lead to change in glass flow pattern.
熔窑结构的变化必然会引起玻璃液流结构的变化。
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