first-in first-out rule

基本解释

Certainly, both parties were eager not to rule out the option of co-operation at the local level in the first few days following the elections in Belgrade.
当然，在贝尔格莱德选举刚刚结束之时，两党还都没有急于排除共同执掌当地政府的可能性。
Debugging way of thinking:Rule out control circuit fault first in principle-rule out an engine per se again fault-rear row in addition to other outside fault.
排除故障思路：原则上先排除控制电路故障——再排除发动机自身故障——后排除其它外部故障。二、常见故障现象及分析处理（以下疏理的是针对对 …
Troubleshooting ideas: first, in principle, rule out the control circuit fault - and then ruled out engine failure itself - after the exclusion of other external fault.
排除故障思路：原则上先排除控制电路故障——再排除发动机自身故障——后排除其它外部故障。