Air bag for ship up to or down to launching way 船舶上排下水用气囊
2.
The theoretic of calculate the react force act on the launching way also be investigated 对74500吨散货船下水时的滑道反力进行了实船计算。
3.
The detail analysis of force act on hull and launching way are discussed for each stage in this report 对每个阶段船体的受力情况和滑道压力进行了分析，并对滑道压力的理论计算方法进行了阐述。
4.
In order to resolve the strength problem of 74500dwt bulk carrier on launching way , two aspects of problem are investigated in this report : 1 ) the analysis and calculation of the force act on the hull and the launching way when ship launching ; 2 ) the strength analysis and calculation of bottom structure in forward area during ship launching 为了解决74500吨散货船下水时船体结构的强度问题，本文主要对两方面的内容进行了研究： 1 )船舶纵向下水时的受力分析和滑道反力计算： 2 )艉浮时艏部区域底部结构强度分析计算。
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