primary standard line

英 [primary standard line]
美 [primary standard line]

中文释义

原级谱线

单词分析

单词结构：

primary standard line

字母数：21

记忆提示

🎯 重点记忆：

  • 单词拼写：primary standard line
  • 核心含义：原级谱线

最近查询：

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更新时间：2026-01-30 07:32:29