four-chamber bellows flowmeter 四腔膜盒式流量计

bellows differential flowmeter 膜盒式差压流量计 ; 差动膜盒流量表

bellows-type gas flowmeter [仪] 膜盒式气体流量计

bellows gas flowmeter 膜盒式气体流量计

bellows type gas flowmeter 膜盒式气体流量计

bellows type flowmeter 伸缩管流量计

bellows s flowmeter 膜盒式流量计

bellows s differential flowmeter 膜盒式差压流量计