目的：评价螺旋CT在肺段水平诊断支扩的价值。

Purpose: To evaluate the diagnostic value of spiral ct in bronchiectasis at segmental level.

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目的：评价多层螺旋CT门静脉成像(MDCTP)在门脉高压侧支循环血管显示中的价值。

Objective: to evaluate the value of multi-detector row spiral ct portography (MDCTP) in demonstrating portal system and its collaterals in portal hypertension.

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介绍了在螺旋焊缝汇管上焊接支管时的防变形措施、焊接方法和检验结果。

This paper introduces the measure, welding method and inspection result to prevent the welding deformation formation of spiral-seam pipe header after tapping.

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