目的：研究胃前壁双重相的显示，以及如何更好地显示前壁病变。

Objective:To study the demonstration of the anterior wall of stomach(AWS)by means of double constrast (DC) radiograph, and improve the detectability of the lesion in AWS.

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用气相色谱-电子捕获器法测定了北京郊区某养鸡场不同生长期的饲养鸡的肌肉、表皮、肝脏、胃、心脏以及鸡蛋、饲料和粪便中hch的残留浓度。

The concentrations of hexachlorocyclohexane isomers (HCHs) in muscle, skin, liver, stomach, heart, eggs, feed and feces of chicken from a poultry farm were determined by GC-ECD.

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目的建立气相色谱法测定胃舒胶囊中环氧乙烷残留量的方法。

Objective: To determine the content of Botanyglycoside in Tongfeng Shule capsule.

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目的建立气相色谱法测定胃舒胶囊中环氧乙烷残留量的方法。

Objective: To determine the content of Botanyglycoside in Tongfeng Shule capsule.

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