In this article, the development of continuous countercurrent flow obstruction rod extractor as well as its structure and characteristics were introduced.

主要介绍一种连续逆流折流管式提取机的开发及其结构和特点。

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Flow around an obstruction causes a decrease in melt front speed and leads to high local viscosity and reduced relaxation.

围绕障碍物流动使融化前部的速度下降并产生较高的局部粘性而减少松弛作用。

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Primary cardiac tumors can mimic many other cardiac conditions and may cause obstruction to blood flow, heart failure, chest pain, syncope, pulmonary hypertension, and arrhythmias.

原发性心脏肿瘤可以产生许多其他心脏病的表现，可能阻塞血流，引起心力衰竭、胸痛、晕厥、肺动脉高压和心律失常等。

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And the answer is that in a chronological flow Article II, the obstruction facts precede much of the perjury allegations.

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