The nicramine ethers perform two functions in the smokeless powder composition.

  • 硝胺醚在无烟火药成份中有两种作用.

  • 词典精选例句 2025-01-19 10:39:18

    • 相关例句
    精确
    • 模糊
    • 词首
    • 词尾
    • 词义
    • 例句