These are useful in hard rock mining where high brisance, high shattering effects, are desired . 这种炸药，对需要高威力、高破碎效应的坚硬岩石矿，是有用的。
In order to loosen the coal, the miners made holes in the dividing wall and filled them with explosives . 为了使煤层松动，矿工们在隔墙上打了炮眼，装进了炸药。
I watched the ties and the rails for any tripwires or signs of explosive but i saw nothing . 我细心察看枕木和铁轨，看有没有什么暗线或是炸药的征像，但是看不见。
By such addition of the cellulosic material, an explosive cast is achieved having greater mechanical strength . 由于加入这种纤维质物质，炸药铸件具有较高的机械强度。
Blasting with small changes inserted into holes drilled into a stump is a considerably milder method . 在树桩里打眼，并装填少量炸药进行爆破，是另一种稳妥得多的方法。
The earliest mention of explosives are to be found in the alchemical writings of the first half of the seventeenth century . 最早提及炸药的是十七世纪上半叶炼金术的著作。
The explosives in challenger's self-destruct system might have been set off by a stray radio signal . “挑战者”号的自毁装置中的炸药可能是由偶然出现的无线电信号引起爆炸的。
The word "grain" is an old ordnance term for explosive powder or even for blocks of cast powders or crystals . 药柱这个词是用于炸药或者甚至用于浇注火药块或晶体块的一个古老的军械术语。
It made sense to be cagey, even though crawling while carrying tools and explosives was awkward and uncomfortable . 还是小心谨慎点为妙，尽管带着工具和炸药在地上爬，行动不便而且很不舒服。
The insulation tester made by nitro nobel permits direct measurement on blasting sites without any risk whatsoever . 诺贝尔炸药公司生产的绝缘检验器，能够用来在爆破地点直接进行量测而没有任何危险。
