$θ /^{\circ}$	$D Z / mm$		$Δ_{p} / %$
$θ /^{\circ}$	节点1	节点3	节点1	节点3
45	−0.55	−0.63	-	-
52	−0.50	−0.60	8.8	5.2
60	−0.42	−0.57	16.3	4.8
68	−0.34	−0.52	17.5	9.3
78	−0.33	−0.50	3.8	3.5