13.马尾松立木二元材积表

V=0.000062341803D1.8551497H0.95682492(材积:m3)胸径(cm)树高(m)33.544.55456789101112130.0020.0040.0050.0070.0080.0110.0130.0150.0180.0210.0030.0040.0060.0080.0100.0120.0150.0180.0210.0240.0030.0050.0070.0090.0110.0140.0170.0200.0240.0270.0030.0050.0070.0100.0120. ......（本文共 5287 字 ）     [阅读本文]>>