以下为句子列表：
英文: 2 Mohamed AH, Wilkinson J, Hunt RH. Duodenal ulcer recurrence after Hel icobacter pylori eradication: a meta-analysis. Gastroenterol 1994;106:A142.
中文: 4全国多中心临床研究协作组.低剂量三联疗法根除幽门螺杆菌的多中心临床研究.中华消化杂志1996，16：192-195.
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英文: A recurrence of such an oversight could impair our amicable relations.
中文: 这样的疏忽倘若再发生，可能有损双方的友好贸易关系。
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英文: Abstract: Estrogen receptor(ER) and Androgen receptor(AR) assays were performed with fluorescent histochemical method in 89 cases of bladder carcinoma.77 cases were followed up for at leazt six years.The tumor recurrence occurred in 32(41.56%).
中文: 文摘:采用荧光组织化学法测定了89例膀胱移行细胞癌雌雄激素受体的表达，获长期随访的77例中有32例复发，复发率为41.56%。
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英文: Abstract: The digital PID control equation in microcomputer-based control systems is introduced.The effects of the technologies of digital smooth filtering，first order recurrence filtering and dynamic compensation for improving the control features and en
中文: 文摘:介绍了微机控制系统中的数字PID控制算式，重点分析了数字平滑滤波、一阶递推滤波和动态补偿技术在改善控制性能、提高控制精度中的作用，给出了仿真实验的结果图。
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英文: Abstract: The raining time,process,area and density of the storm resulting in the Nenjiang flood in August 1988 and its recurrence period were analyzed.The disaster data of the flood was also presented.
中文: 文摘:论述了形成1988年8月嫩江大洪水的降雨发生时间及过程、雨区范围、降雨强度，分析了该次洪水的峰、量组成情况及稀遇程度，汇集了灾情损失数据。
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