肝静脉表现包括：癌栓形成（19例）、肿瘤压迫（2例）、肝静脉未显示（4例）和局限性狭窄（4例）。

Hepatic venous findings included tumor thrombosis(19 patients), tumor compression(2 patients), nonvisualization(4 patients)and focal stenosis(4 patients)of the hepatic veins.

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早期的手机的数据通道非常狭窄，而这种方法刚好就缓和了这些设备及其网络的局限性。

Older cell phones had especially narrow data pipes, so this was a concession to the limitations of the devices and their networks.

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摘要目前我国甜菜育成品种存在变异系谱和遗传基础狭窄的局限性。

Recently the sugar beet varieties bred in china are limited in hereditary basis and genetic variation genealogy .

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