以下为句子列表：
英文: Abstract: In this paper，the essential chemical composition on the spheroidized quality of small-sized ductile iron pipes have been investigated，and the degeneration of spheroidal graphite in ductile iron pipe was analyzed，under practical manufacturing con
中文: 文摘:在实际生产的条件下，研究了小口径球墨铸铁管在球化后主要化学成分的分布和变化对铸态球化效果的影响，并对铸管存在的球化衰退进行了分析；根据试验结果，提出了对成分及工艺条件进一步的改进措施。
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英文: Ageing is accompanied by a slow degeneration of his mental faculties.
中文: 他随著年纪增长, 智力逐渐衰退.
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英文: Alzheimer's and Parkinson's are neurodegenerative diseases in which cell damage and degeneration is seen in certain specific areas of the brain.
中文: 早老性痴呆症及帕金森氏症神经退化疾病，是脑的一些特殊部位的细胞出现损坏及退化现象。
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英文: Calcitonin suppresses lumbar intervertebral disc degeneration in ovariectomized rats;
中文: 降钙素治疗延缓卵巢切除大鼠腰椎间盘退变
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英文: Arthroscopic evaluation on cartilage degeneration was graded by Ogilvie-Harris method.
中文: 关节镜术中，对软骨退变程度依照Ogilvie－Harris法分级。
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