The curvature conforms to the hole axial line.
曲率与井眼轴线的一致。
The hole is penetrated through from the bottom of the tank to the top and the central line of the hole is basically co-axial with that of the spark plug.
该孔洞从油箱底部至油箱顶部一直贯通，而且该孔洞的中心线基本上与火花塞中心线同轴。
The hole is penetrated through from the bottom of the tank to the top and the central line of the hole is basically co-axial with that of the spark plug.
该孔洞从油箱底部至油箱顶部一直贯通，而且该孔洞的中心线基本上与火花塞中心线同轴。
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