Ocean current exerts a great influence on ship navigation and sailing safety.
海流对船舶导航、航行安全影响较大。
The ship navigation system consists of mathematical model and knowledge model.
船舶驾驶系统既包含数学模型，也包含知识模型。
A temporary ship lock was first applied for navigation during construction in China.
五强溪水电工程施工期采用临时船闸通航，在国内是第一次。
At present, Three Gorges five-level ship lock is the largest navigation facility in the world.
三峡五级船闸是目前世界上规模最大的通航设施。
At present, Three Gorges five-level ship lock is the largest navigation facility in the world.
三峡五级船闸是目前世界上规模最大的通航设施。
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