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视网膜小动脉弯曲合并复发性视网膜出血在1958第一次被提出。Retinal arteriolar tortuosity with retinal hemorrhage was first described in 1958.

椎动脉扭曲与颈椎退行性变有关。There was a correlation between vertebral artery tortuosity and cervical spondylotic change.

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新制定的分型标准为是否有假性动脉瘤形成、是否有附壁血栓形成及是否有内膜片的扭曲。The new criteria included the false aneurysm, the mural thrombus, and the tortuosity of the intimal flap.

首先见到的改变是动脉弯曲度的增加和管壁的增厚，它可压迫其下面的静脉。The first recognizable abnormality is increased tortuosity and thickening of the arteries which may compress the underlying veins.

内容包括变质环境下的液体流动研究，以及与岩石之间的相互作用，如岩石的多孔性、弯曲性等。It contains a study of fluid flow in metamorphic environments and their interaction with rock properties such as porosity and tortuosity.

通常在定量分析孔隙度、渗透率等物性参数变化规律时，往往假设迂曲度不发生变化。During variation rules of porosity, permeability and other physical properties were analyzed quantitatively, we suppose the tortuosity has no change.

本文通过对燃素说兴衰史的简单回顾，说明了人类认识的相对性和曲折性，以及应如何正确对待科学遗产。Reviewing briefly the rise and decline of the flammable element theory, this article throws tight on the relativity and tortuosity of human's knowledge.

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此外，支架断裂在开口病变、长病变、成角病变近段、扭曲病变、广泛钙化病变以及完全闭塞病变更为常见。In addition, fractures were more common with ostial location, longer lesions, angulation, proximal tortuosity , extensive vessel calcification and total occlusion.

目的分析冠状动脉造影无明显狭窄病变而有冠状动脉迂曲的胸痛病人的临床特点。Objectives To analyze the clinical characteristics in chest pain patients with coronary artery tortuosity without coronary stenosis defined by coronary angiography.

气流流过集合体时不仅与空隙的多少有关，而且与空隙的形状、曲折程度、排列和孔径的分布有关。Air permeability is not only related with the void numbers, but also connected with the morphological structure, arrangement, tortuosity and distribution of the voids.

孔隙结构特征表现为孔喉半径及其高宽比小，分形维数、毛细管弯曲度和孔-喉径比大。The pore structure features small pore throat radius and low height-wide ratio, and much fractal dimension, big capillary tortuosity and high pore-throat radius ratio.

通过分析认为，储层经过长期注入聚合物后，使一部分小喉道变大，孔隙之间的畅通性进一步变好，孔隙迂曲程度减小。It is suggested that the long-term polymer drive has resulted in enlarging some small pore throats, improving the communication among pores and reducing pore tortuosity in the reservoirs.

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结果22例患者中，21例床边临时心脏起搏获成功，1例因血管迂曲畸形改在X线下重新插管亦成功起搏。Results Among 22 patients, 21 patients were successfully paced at bedside with ordinary catheter. Another one, because of tortuosity of vessel, under X-ray, the operation was successful, too.