purdah

短语词组

短语

• cement purdah 帷幕截流
• grouting purdah 灌浆帷幕
• underground purdah 井下帷幕
• purdah grouting 基础帷幕灌浆
• purdah stake 帷幕桩
• watertight purdah 止水帷幕
• purdah panel wall 帷幕板墙
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