管壁文档-能源电力资料库

3.51 t70m0.350.1~0.30.28m1.4t/m³0.024m0.030.01~0.030.94t/m³22.5MPA1.7863391766MPA12.60 拖管拉力F=穿越长度L=摩擦系数f=管直径D=...

                  2026-04-20发布
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