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- middle--deep blasting hole 深孔爆破
- The stemming length of blasting hole is an important bla sting parameter,directly related to the blasting results. 在爆破中,炮孔堵塞长度是一个重要的爆破参数,它直接关系到爆破效果。
- By improving parameters of the blasting hole,the charge,charging structure and the priming order etc,the smooth blasting is formed. 通过改进爆破的孔网参数、装药量与装药结构、起爆顺序等,从而形成了光面爆破。
- The form and devel-opment of the blast hole cracking is t he main reason which leads to the effe ctive crush. 不同炮孔周围裂纹的适量产生与发展,是引起岩石有效破碎的真正原因。
- At the Garson Mine in the Sudbury basin, an instrumented test opening has been mined under a paste backfil1ed blast hole stope. 而在萨德伯里盆地的加森矿，已在采用深孔崩矿的膏体充填体下进行试采。
- Blact hole cxplesion in a confed condition within tunneling is analysized,a stage-by-stage blast hole design theory and the related paraameters are presentes. 对掘进中处于夹制情况下的炮孔爆破进行分析，提出炮眼分阶段设计的原理及有关的参数。
- It has its roots deep in the Middle Ages. 它起源于遥远的中世纪。
- The Application of Deep Pot Blasting Hole in Soil and Rock Blasting Project 深孔扩壶爆破技术在土石方爆破工程中的应用
- The blasting principle of water coupling blasting holes with primacord is discussed. 论述了导爆索水耦合炮眼爆破原理。
- The study has sho wn that the deeper the blast holes, the longer the initiation delay time. 应用模型对掏槽微差起爆时间进行的优化研究表明,掏槽微差起爆时间与孔深成正比。
- Blasters in this unit group fill blast holes with explosives and detonate explosives to dislodge coal, ore and rock or to demolish structures. 爆破员用炸药填补爆破洞，然后引爆炸药提炼出煤炭，矿石和岩石或粉碎建筑物。
- I'm sick of being piggy in the middle all the time. 我腻烦了总是夹在争吵双方的中间。
- He planted roses in the middle of the garden. 他在花园中间种上玫瑰。
- Large area multiple-row blast hole short-delay blasting 多排孔大区微差爆破
- He admires the chivalry of knights in Middle Ages. 他很佩服中世纪武士的侠义精神。
- My wheel twisted off in the middle of the car race. 我的车轮子在汽车比赛中途脱掉了。
- We have studied botany in our middle school. 我们在中学的时候就学过植物学。
- To achieve high casting blast efficiency, technical parameters such as bench height, angles, diameters and patterns of blasting holes, priming method and delay time should be selected properly. 为取得较高的抛爆率,需要注意选择的技术条件包括台阶高度、炮孔角度、炮孔直径、布孔方式、起爆方式及延时选择等。
- There are 300 students or so in this middle school. 这所中学大约有300个学生。
- Drillers in this unit group operate mobile drilling machines to bore blast holes in open-pit mines and quarries and to bore holes for blasting and for building foundations at construction sites. 该项中的钻探工人操作移动钻孔机实施露天矿和采石场的钻孔爆破以及建筑工地的建筑物基础设施的爆破工作。
