echelon (grating)

英 [echelon (grating)]
美 [echelon (grating)]

中文释义

阶梯光栅

单词分析

单词结构：

echelon (grating)

字母数：17

记忆提示

🎯 重点记忆：

  • 单词拼写：echelon (grating)
  • 核心含义：阶梯光栅

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更新时间：2025-12-09 22:13:49