The petroleum maintenance condition in the western part is relatively better than that in the eastern part in Xichang basin.
相对而言，西昌盆地西部地区的保存条件较东部地区好。
It shall be ensured that, under normal maintenance condition, all members that have been subject to the anticorrosion treatment will not need to be treated again within 20 years.
所有经过抗腐蚀处理的构件，保证在正常维护情况下，20年内无需重新进行防腐防锈处理。
Normal positions: running condition, hot standby mode, cold standby mode, maintenance condition, and trolley operation conditions, etc.
如错误操作有：运行状态拉合小车、热备用状态合地刀（挂地线）、检修状态合小车等。
Normal positions: running condition, hot standby mode, cold standby mode, maintenance condition, and trolley operation conditions, etc.
如错误操作有：运行状态拉合小车、热备用状态合地刀（挂地线）、检修状态合小车等。
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