逐步计算 meaning in Chinese

stepwise computation

Now , ratchet up the calculations for a hurricane about the size of missouri and the figures get really massive
现在，逐步计算像密苏里飓风那样的热带风暴的含水量，数据真是大的惊人。
Then , a step - by - step increase of vertical bending curvature is applied to the hull girder assuming that the plane cross section remains plane . at each incremental step , the stress of the cross section is evaluated using the average stress - strain curves of the elements as well as the incremental bending moment due to the curvature increment
船体总纵极限弯矩的计算，由于要计及材料的和几何的非线性因素而变得十分复杂，必须用增量的方法逐步计算，获得完整的弯矩?曲率曲线后，才能得到总纵极限弯矩值。