重要的参考点，如胸点、前中心线、后中心线等。
Important reference points such AS the bust point, CF and CB etc.
关于这一点没有硬性的规定，但是大多数省道通常向前中心线或后中心线烫倒。
There are not hard and fast rules about this but most darts normally fold in towards the cf or cb. see arrows in figure13-10. press a way from cf.
关于这一点没有硬性的规定，但是大多数省道通常向前中心线或后中心线烫倒。
There are not hard and fast rules about this, but most darts normally fold in towards the CF or CB. See arrows in Figure 13-10. press a way from CF.
分析了对接面与管段中心线夹角误差对沉放后线路位置的影响，提出了控制隧道轴线偏差的措施；
This paper also presents a method to solve the tunnel axis displacement on line caused by angle error between tube center axis and datum of joint.
铸坯中心线偏析是产生裂纹的内部条件，轧后冷却或矫直过程中的张应力是外部条件。
The internal condition for cracking is the centerline segregation of slab and the external is the tensile stress of slab formed during cooling or straightening.
优选的，所述壳体的表面流线型由头部到尾部逐渐收缩，所述后开口围绕所述壳体的中心线对称分布。
Preferably, the streamline surface of the shell is gradually shrunk from the head to the tail, and the rear openings are symmetrically distributed around the Central Line of the shell.
当完全进入奔跑状态时，波利犬步伐平稳而有效，前躯伸展和后躯驱动都很好。随着速度增加，足爪自然的聚拢到身体中心线位置。
When at a full trot, the Puli covers ground smoothly and efficiently with good reach and drive, the feet naturally tending to converge toward a median line of travel as speed increases.
当完全进入奔跑状态时，波利犬步伐平稳而有效，前躯伸展和后躯驱动都很好。随着速度增加，足爪自然的聚拢到身体中心线位置。
When at a full trot, the Puli covers ground smoothly and efficiently with good reach and drive, the feet naturally tending to converge toward a median line of travel as speed increases.
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