文中还计算出与电器元件连接负载电缆的安全长度。
The safety length to connect apparatus component and load cable was calculated and given.
本文提出了热管换热器加热段和冷却段的三种长度比：流通长度比、经济长度比和许用安全长度比。
Three kinds of length ratio of evaporator to condenser of heat pipe heat exchangers are proposed: the flow length ratio, the saving length ratio, and the allowable safety length ratio.
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