完全没有时差。
The jumbo jet is after all one of the most potent symbols of this century.
说到底，大型飞机是本世纪最成功的标志。
Although all techniques may be practiced underwater, the water jet cutting is advanced and better.
文章对比分析了当前可以采用的水下切割技术，指出射流切割更具有发展潜力。
Although all techniques may be practiced underwater, the water jet cutting is advanced and better.
文章对比分析了当前可以采用的水下切割技术，指出射流切割更具有发展潜力。
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