计算结果指出：门机结构总体应力水平较低，其严重受力件主梁具有较大的强度富裕度，不必更换。
The results show that the crane is unnecessary to replace for its low total stress level and large strength margin of the main girder (main stressed part).
研究结果表明门机结构总体应力水平较低，严重受力件主梁具有较大的强度富裕度，可以保证超期服役的安全性。
The research shows that stress level of the crane structure is low and crane girder has large enough strength margin to assure the safety of using crane under extended service.
这句话的意思是说在探索非洲艺术作品的富裕度时，人们将会注意到特殊模式的意思和习惯表达一再发生的原因是因为这种模式重复的现象能在几乎所有世界文明中找到。
The reason why one will note that certain patterns of meaning and usage occur again and again is because this phenomenon is found in nearly all world civilizations throughout most of history.
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