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主仪表空气供应系统发生故障时,由全厂统一考虑连续提供20分钟事故仪表空气用量。
Instrument air supply shall last at least 20 minutes if the main IA system fails.
youdao
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主仪表空气供应系统发生故障时,由全厂统一考虑连续提供20分钟事故仪表空气用量。
Instrument air supply shall last at least 20 minutes if the main IA system fails.
youdao