利用里程仪可以抑制惯导的误差积累，但里程仪刻度系数误差对组合系统的定位精度影响很大，必须对其进行校正。
The error accumulation of inertial navigation system can be restrained via OD, however, OD scale factor error has remarkable effect on the positioning precision.
用强化系数求出强化试验时间以及故障里程，根据故障里程可以对试验结果进行评价。
Failure's miles and the time of enhancement test can be got with enhancement coefficient.
用强化系数求出强化试验时间以及故障里程，根据故障里程可以对试验结果进行评价。
Failure's miles and the time of enhancement test can be got with enhancement coefficient.
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