annulus profile
... annulus pressure 环空压力 annulus profile 环形剖面 annulus scraper 环形刮蜡器 ...
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从环形形体的标准剖面上来看，看台屋顶是由带有胶合板的钢架梁以及预制混凝土墙支撑。
For the typical section of the encircling ring, the bleacher roof is supported on the hybrid beams that composed of steel ribs bolted with glulam and reinforced concrete independent walls.
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