石英玻璃：主要应用于军工，冶金，仪器等行业的高温窗口光学石英玻璃片。
Quartz glass: Mainly used in military, metallurgy, instruments, and other industries in the high-temperature optical quartz glass window.
该仪器性能稳定、操作简便、价格低廉，已成功地用于二氧化硫和有机物蒸汽测定的压电石英晶体传感器的研制。
The frequency counter has ben applied successfully to a piezoelectric crystal chemical sensor for determining SO_2 and organic vapours.
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