In this way there are many merits in this system achieving hardware easily, processing speed quickly, good timeliness, managing keys expediently and small volume, etc.
和现有的其他方法比较，该方法具有硬件实现容易，处理速度快，实时性好，密钥管理方便，体积小等特点。
The method has the advantages of fast speed, high accuracy, good timeliness and various faults on inner surface and inner diameter of a steel tube can be effectively inspected.
该方法速度快，精度高，实时性好，可以有效地检测钢管内表面的各种缺陷及钢管内直径。
Presently, besides that the railway supply can't meet the transportation demand, it is an outstanding problem that the timeliness of railway goods transportation is not good.
目前除了铁路运输供给能力仍不能满足货物运输的需求外，铁路货物运输的时效性差是一个突出的问题。
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