The dynamic stress field and the mechanism of the directed fracture blasting are analyzed.
分析和讨论了定向断裂爆破动应力场参数和定向断裂爆破作用机理；
The practical directed fracture blasting method and the corresponding technology are optimized.
优选了实用的定向断裂爆破新方法和配套工艺。
The purpose of Controlled Blasting Engineering is study the directed fracture of rock and the crack expansion.
工程控制爆破 ，要研究岩石的定向断裂的裂纹扩展。
The model test investigations of directed fracture blasting have been carried out by using the super dynamic measuring system and the 3-dimensional laser holographic dynamic photoelastic instrument.
采用三维激光全息动光弹超动态综合测试系统进行了定向断裂爆破模型试验研究。
Through the study formed the exploitation technology of buried hill fracture oil reservoir and directed this kind of buried hill oil reservoir exploited in efficient way.
通过研究形成潜山裂缝性油藏勘探开发技术，指导该类潜山油藏的高效开发。
Her research is directed at examining ways in which calcium, vitamin d, protein, and other nutrients influence bone, muscle, and risk of fracture.
她的研究方向是钙、维生素d、蛋白质和其他营养素对骨骼、肌肉和骨折风险的影响。
Her research is directed at examining ways in which calcium, vitamin d, protein, and other nutrients influence bone, muscle, and risk of fracture.
她的研究方向是钙、维生素d、蛋白质和其他营养素对骨骼、肌肉和骨折风险的影响。
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