Mute noise reduction well lid convenient to replace

The invention belongs to the technical field of inspection well lid equipment, and particularly relates to a convenient-to-replace mute noise reduction well lid which comprises a base and a cover plate. The device comprises a base, a cover plate and a locking and fixing mechanism, the locking and fi...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WANG HONGYAN, MA LU, ZHANG JUNGUO, ZHU ZHONGQING, WANG HONGJUN, YU ZHONGWEN, ZHANG SHUJUN, DIAO HONGPENG, ZHU XIAOLI, CUI YANBO, TANG HONGBO, WANG SHANFENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS HYDRAULIC ENGINEERING SOIL SHIFTING UNDERGROUND OR UNDERWATER STRUCTURES
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