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for subject
Aviation
containing
Observed
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exact matches only
English
Chinese
known or
observed
or detected ice accretion
已知的或者观察到的或者探测到的结冰
lower
observed
frequency
最低观察频率
lowest
observed
frequency
最低观测频
mean
observed
range
平均观察距离
observed
mean time between failure
观察的平均故障间隔时间
observed
mean time between failure
观察的故障间隔平均时间
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