对肝内胆管结石较多、病灶较复杂、肝内胆管病变严重的病例，胆总管切开取石、T管流术不是一种“根治性”手术。
Section of common bile duct, calculus remove and drainage with Ttube is not a radical procedure for cases with more serious and complicated calculus and abnormality of intrahepatic duct.
目的是探讨彩色多普勒静脉收缩术在评估二尖瓣反流分级中的作用。
The objective is to explore the roles of color Doppler vena contracta in the evaluation of mitral regurgitation grading.
莱布尼茨否认了这种行为。准确的说，牛顿还未发表过任何关于流数术fluxions的文章，也不太可能同一个短暂停留的客人讨论他的观点。
He denied the charge (probably accurately, since Newton had still not published anything on fluxions, and would hardly have discussed his idea with a transient acquaintance).
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