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DDL
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【计】 数据库定义语言, 数据定义语言, 数据描述语言, 数据系统设计语言
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分类:
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详细解释:
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以下为句子列表:
英文: Based on the current-rising-rate protection and current increment protection, the principle of DDL protection as well as its action equation is presented.
中文: 以电流上升率保护和电流增量保护为基础,提出了一种新型的DDL保护方法及整定原则,并推导出了完整的动作方程。
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英文: The behavior principle of DDL protection for DC feeder in DC traction current supply system and the setting principle of protection parameters are introduced and illustrative examples are given.
中文: 摘要介绍直流牵引供电系统中直流馈线DDL保护的动作原理,以及保护参数的设定原则,并举例说明。
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