Various attempts have been made to find suitable initiation systems.
为寻找合适的`引发体系，人们进行了各种尝试。
Research progresses on Influence of Initiation charge location for blasting effect
起爆药包位置影响爆破效果的研究进展
Study on the Fracture Initiation and Propagation Model for Horizontal Well Fracturing
水平井压裂起裂机理及裂缝延伸模型研究
P2P Technology Initiation Copyright Right Infringement Question International Law Research
P2P技术引发的版权侵权问题的国际法研究