?流量计

... weighting level gauge 重量位面计; 重量物位计 weir gauge 流量计 weld gauge 焊缝量规 ...

?堰顶水位计

... 堰顶水头 head of water over weir; head on weirs; weir head 堰顶水位计 weir gauge 云顶水平线 cloud horizon ...