求翻译：尖劈长度L，通常所讨论的尖劈长度设计涉及三个尺寸，即尖劈劈部长度L1，尖劈基部高度L2，尖劈基部的长度一般为劈部长度的1/4到1/6之间，耦合腔深度L3, 耦合腔深度一般为吸声结构长度的1/8到1/10左右，L=L1+L2+L3。是什么意思？

Length l wedges, the wedges discussion length design usually involves three dimensions, namely Minister of wedges cut of L1, L2 wedges base height, wedges of base length is generally split between the Minister of one-fourth per cent, coupled-cavity depth L3, coupled-cavity depth is about sound absorbing structure of length to one-eighth, L=L1+L2+L3.