Aiming at the high occurrence of accident at civil blasting material storage and its significance in safety, the defects of evaluation methods currently being used are pointed out.
针对高校教材库房管理中存在的问题，探讨了教材管理部门与图书馆合作建立教材样本库的现实意义，提出了教材样本库筹建的具体措施。
HeLuanShi system in engineering field, pressure-blasting machine is mechanism sand, cushion material, asphalt concrete and cement concrete aggregate ideal production equipment.
在工程领域，河卵石制砂机是机制砂、垫层料、沥青混凝土和水泥混凝土骨料的理想生产设备。
Analyzes reasons for tube blasting of steam superheater and recommends a kind of tube material which can better satisfy production requirements.
通过对蒸汽过热炉爆管原因进行分析，提出一种更能满足生产需要的炉管材料。
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