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1·A manned submersible has to meet even higher standards: it must keep its occupants alive.

一艘载人潜艇还必须达到更高的标准：它必须保证乘坐者活着。

2·The nonlinear hydrodynamic forces on a deep manned submersible at a low forward speed and large drift angles are determined by a model test.

通过模型试验测量大深度载人潜水器低速大漂角运动时所受到的非线性水动力。

3·According to the requirement of the total diving number and the assumption of the distribution type, the fatigue load spectrum for the 7000m deep manned submersible is given.

根据设计任务书中规定的总的下潜次数要求，最后给出了我国目前正在研制的7000米载人潜水器耐压球壳的疲劳载荷谱。