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由煤炭科学研究总院唐山分院承担研制的LCZ－803型超声波流量计（宽量程双探头超声波流量计的研制）于1997年6月在江西庐山通过了煤炭部组织的专家鉴定。以我国声学专家姜天仕教授为首的专家组，一致认为：“LCZ－803型超声波流量计技术指标达到了国外同类先进产品水平，在国内
The LCZ-803-type ultrasonic flowmeter (developed by the wide-range dual-probe ultrasonic flowmeter) developed by the Tangshan Branch of the Coal Science Research Institute passed the appraisal by the Ministry of Coal Industry in Lushan, Jiangxi Province in June 1997. Expert group led by Professor Jiang Tianshi acoustic experts in our country, agreed: "LCZ-803-type ultrasonic flowmeter technical indicators have reached the level of similar foreign advanced products in China