英语词汇“试金针”的翻译、意思、用法、释义-英汉汉英词典

单词	试金针
释义	试金针phr.touch needle试金针（用纯金或已知成分的金银合金制的针，用以在试金石上划一条痕，并以此作标准与金器或银器划出的条痕作比较，从而检验金、银器的纯度）
随便看	relief printing ink relief printing machine relief process relief ratio relief ring relief road reliefs relief/safety valve relief services relief sewer relief spring relief sprue relief staff relief stretching relief supplies relief symbol relief tank relief tap relief telescope relief television relief track relief train relief troop s relief troops relief tube