推荐回答(3个)
消声器的构造一般有三段不同的直径,排气时其流速不同。
Rated Flow LR (CFM) 低额定流量(立方英尺/分钟)
Rated Flow MR (CFM) 中额定流量(立方英尺/分钟)
Rated Flow HR (CFM) 高额定流量(立方英尺/分钟)
Back Press LR (In Hg) 低流量时的压力(英寸汞柱)
Back Press MR (In Hg) 中流量时的压力(英寸汞柱)
Back Press HR (In Hg) 高流量时的压力(英寸汞柱)
Attenuation (dBA) 噪音降低度(分贝)
blue_house_7: MR的解释我查了很多资料,属于MR的缩略词有几百个,后来经过我反复验证,我觉得LR MR HR 最可能是
LR: Low Risk 低风险
MR: Median Risk 中度风险
HR: High Risk 高风险
因为我参考了参考资料Risk classification
外国人通常称LR为Low Risk 推知,其余为...
Patients were classified into low risk (LR), MR and HR on the basis of their presenting clinical features, biological features and early response to remission induction treatment.
http://www.cmj.org/Periodical/PaperList.asp?id=LW200835368853805480
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Rated Flow:额定流量
CFM:(单位)
立方英尺每分
In Hg (压力单位之一)
英寸汞柱
back press
背压力
Attenuation
噪音降低度
dBA(单位)
decibel adjusted 调整分贝(=82dbm)
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