Blasts at a reverse angle to reach behind ridges of confined spaces. 以反转角喷射以达到受限空间的后部隆起部分。
Moreover, the presence of adhesive improves bending resistance, meanwhile it results in an early failure of the extrusions at a small bending rotation and angle. 界面粘接提高了填充结构的抗弯刚度,但使结构易在较小转角下发生破坏。