There is a helicopter pad right in front of the side of the Pentagon. The wing touched there, then the plane cartwheeled into the building.

五角大楼侧面有一个直升机停机坪，机翼碰到停机坪上，旋即侧滚进五角大楼的建筑中。

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In the plane, lenticular gold-bearing quartz vein is arranged in echelon to the right row and overlapping side-curtain. In profile, it is pre-side spread.

透镜状含金石英脉在平面上呈右行雁列排列与重叠侧幕排列，剖面上呈前侧式展布。

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Facing tools. Facing tools are employed in facing operations for machining plane side or end surfaces. There are tools for machining left-hand-side surfaces and tools for right-hand-side surfaces.

端面刀具用在端面作业中加工平板侧面或端部表面，也有加工左右侧表面之分。

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Facing tools. Facing tools are employed in facing operations for machining plane side or end surfaces. There are tools for machining left-hand-side surfaces and tools for right-hand-side surfaces.

端面刀具用在端面作业中加工平板侧面或端部表面，也有加工左右侧表面之分。

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