B -B

英 [B -B]
美 [B -B]

中文释义

abbr. butane-butene (fraction)【化学】丁烷—丁烯馏分

单词分析

单词结构：

B -B

字母数：4

记忆提示

🎯 重点记忆：

  • 单词拼写：B -B
  • 核心含义：abbr. butane-butene (fraction)【化学】丁烷—丁烯馏分

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更新时间：2026-02-15 04:06:39