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International Standard Category: Seismic and vibration protection

DB/T 20.2-2006    Specification for the construction of seismic station Underground fluid station Part 2: Gas radon and gas mercury observatory
地震台站建设规范 地下流体台站 第2部分:气氡和气汞台站 ;
Category No.:91.120.25 Valid Status:valid
Issued Organization:CEA Issued Date:2006-2-20
Implemented Date:2006-5-1 Abolished Date:
Superseded Standard.: Superseded Date:
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