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建立了管道有效计算长度的确定方法。
Determining method of effective calculation distance was given.
youdao
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对弱支撑体系，提出了柱子计算长度的实用计算公式。
For weak bracing system, this paper provided the concrete formula...
youdao
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对弱支撑体系，提出了柱子计算长度的实用计算公式。
For weak bracing system, this paper provided the concrete formula...
youdao