超期服役，指士兵服役期满后，继续留在军队服役。《兵役法》规定“义务兵服现役期满，根据军队需要和本人自愿，可以超期服现役。超期服现役的期限：陆军1～2年，海、空军1年。
还介绍了超期服役主蒸汽管道剩余寿命试验结果。
The experimental results of steam pipes which has been in operation over 100,000 hours are also reported.
通过运用相应的干预手段，加强对超期服役设备的管理。
Therefore management of medical equipments in extended service can be enhanced with the application of corresponding measures.
而我国煤炭运输船舶普遍吨位较小，船龄偏大，成本偏高，许多老龄船已超期服役。
But presently, domestic power coal fleet tonnage is rather small and a ship age tends to be too old. What is more, many old-age Dry bulk ships have extended services.
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