Various attempts have been made to find suitable initiation systems.

　　為尋找合適的`引發體系，人們進行了各種嘗試。

　　Research progresses on Influence of Initiation charge location for blasting effect

　　起爆藥包位置影響爆破效果的研究進展

　　Study on the Fracture Initiation and Propagation Model for Horizontal Well Fracturing

　　水平井壓裂起裂機理及裂縫延伸模型研究

　　P2P Technology Initiation Copyright Right Infringement Question International Law Research

　　P2P技術引發的版權侵權問題的國際法研究