这种光纤相位延迟器具有连续可调和直读特性，同时具有宽波带特点。
This device, characterised by broad band, can be adjusted continuously and read directly.
目的：探讨P波增宽对冠心病的诊断价值。
Objective: To study the diagnose value of broadened P wave for coronary heart disease.
本文就宽qrs波心动过速的诊断及鉴别诊断做一综述。
This paper is about how to make diagnosis and differentiation.
本文就宽qrs波心动过速的诊断及鉴别诊断做一综述。
This paper is about how to make diagnosis and differentiation.
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