“UL”是“Underwriters Laboratories”的缩写，意思是“保

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“USGBC”是“United States Green Building Council”的

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“RCP”是“Round Reinforced Concrete Pipe”的缩写，意思

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“RCPA”是“Reinforced Concrete Pipe-Arch”的缩写，意思

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“RCPHE”是“Reinforced Concrete Pipe Horizontal

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“CMP”是“Corrugated Metal Pipe (Round)”的缩写，意思

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“CMMAC”是“Metal Arch Culvert”的缩写，意思是“金属拱

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“CSP”是“Corrugated Steel Pipe”的缩写，意思是“波纹钢

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“CSMAC”是“Metal Arch Culvert”的缩写，意思是“金属拱

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“ACSP”是“Aluminized (Type 2) Round Corrugated

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