• 1. four-phase system: 四相制 | 四相系统
• 2. three phase four wire system: 三相四线制
• 3. four phase system: 四相输电

更多释义

• 1.As shown in Table 1, system demonstrations started four to six weeks into the construction phase.
  如表1所示，系统演示开始了四到六周时，我们就进入了构建阶段。
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• 2.The manage phase can be categorized into at least four main areas that are more relevant to an SOA system.
  管理阶段至少可以分为四个主要领域，它们与SOA系统有更为密切的关系。
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• 3.The reliability and transient stability of the transmission system may be improved, because two adjacent phase conductors of four-phase transmission lines can be operable.
  四相线路可以采用两相邻相运行，能提高输电系统运行的可靠性与暂态稳定性。
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