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保护继电器
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保护继电器
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工学
电力系统安全自动装置
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protection relay
保护继电器
用于继电保护装置中,当输入量(激励量)的变化达到规定要求时,在电气输出电路中使被控量发生预定的阶跃变化的一种电器。
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clothing electronic made to measure system
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clothing hand-painted
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Clothing Patterns of China Dunhuang Mural
clothing positioning design
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clothing production arrangements
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clothing silhouette
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