By use of dynamic strain testing, the ultrasonic wave, bedded composite rock damage and fracture mechanisms and the fragmentation process during blasting have been experimentally studied.
运用超动态应变测试技术、超声波检测仪对层状复合岩体的爆破损伤破坏机理和破坏过程进行了实验研究。
2
The fragmentation reaction of aryl tertiary phosphines in the presence of lithium can be promoted effectively by use of ultrasonic irradiation.