The contrast experimental study about infusion technology at low and atmospheric pressure was acted.

在低压和常压状态下进行了浸渍工艺的对比性试验研究。

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Objective:To evaluate the basic characteristics and effects of a novel polymer echo contrast agent on the left ventricular cavity and myocardial opacification with experimental animal study.

目的观察自制新型多聚体超声造影剂的基本特性及其对实验犬左心室及心肌增强显像的效果。

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Object: To evaluate the prophylactic effect of ceramic-coating filter for post-operative secondary thrombosis in inferior vena cava through a contrast experimental study.

目的：通过对照动物实验评价陶瓷涂层腔静脉滤器预防滤器置入术后继发性血栓形成的效果。

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