The properties, production technology and classification of single-piece of fire-proof glass are described in this paper.
介绍了防火玻璃的性能，以及国内防火玻璃的生产技术和分类。
My factory productions quartz sand mainly uses in the glass, fire-proof material, smelting ferrosilicon, flux, ceramics, abrasive substance, casting.
我厂生产的石英砂主要用于玻璃，耐火材料，冶炼硅铁，冶金熔剂。
On May 21, 1984 two inmates of a prison in Celle, Germany, took a jailer as a hostage, showed off their fire power by letting go at a pane of bullet-proof glass, and escaped by car.
1984年5月21日，两个犯人在德国Celle监狱，以狱卒作为人质，秀出他们枪支的威力于防弹玻璃上，并顺利乘车逃脱。
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