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Ring cap for street water hydrant has an oval-shaped outer peripheral zone around central aperture
Ring cap for street water hydrant has an oval-shaped outer peripheral zone around central aperture
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机译:街道消火栓的环形盖在中心孔周围有一个椭圆形的外围区域
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摘要
A street water hydrant has a cover located within a surrounding ring cap (1). The cap has an outer peripheral zone (3) and a horizontal (2) interface receiving the cover and surrounding the central aperture. The outer peripheral zone (3) is essentially oval with respect to the horizontal interface (2).
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