薄壁堰 meaning in English

knife edge weir
knife-edge weir
sharp-crested weir
thin plate weir
thin weir
thin-plate weir
thin－plate weir

Water flow measurement in open channels using thin - wall weir
用薄壁堰测量明渠中水流量
Standards for municipal wastewater discharge measurement . rectangular notch thin - plate weir
城市排水流量堰槽测量标.矩形薄壁堰
Standards for municipal wastewater discharge measurement . triangular notch v notch thin - plate weir
城市排水流量堰槽测量标准.三角形薄壁堰