バックホウ用骨組みモデル
X[1]
Y[1]
Z[1]
X[2]
Y[2]
Z[2]
X[3]
Y[3]
Z[3]
X[4]
Y[4]
Z[4]
L[1]
L[2]
L[3]
L[4]
alpha[0]
beta[0]
alpha[1]
beta[1]
alpha[2]
beta[2]
alpha[3]
beta[3]