检修

It is generally appreciated that the rail network needs a complete overhaul.

众所周知，铁路系统需要大。

All weaponry demands frequent servicing.

所有武器都需要经常。

A mechanic overhauled the car’s motor with some new parts.

一个理工对那辆汽车发动机进行了彻底,换了一些新部件。

Therefore, the water-surface crossing with mobile flexible pipelines is often adopted and it is a first choice to cross an innavigable river.

软管水面穿越河流具有铺设迅速,方便,容易掌握和使等优点,尤其是对于不通航河流,是软质机动管线临时穿越河流首选方式。

Presents British AMV ammonia process, the operation of Secondary reformer with natural gas as the feed,air distributor and fractory lining damage and their repair.

英国AMV合成氨工艺,以天然气为原料二段转化炉运行及空气分布器、耐火衬里损坏和情况,并对装置出现问题采取有效改进措施,以供同行业参考。