free silver meaning in English

〔美国〕银币的自由铸造。

Two - direction pulse plating process for cyanide - free silver plating
双向脉冲无氰镀银工艺研究
The historical origins and its far - reaching influence of the free silver movement
美国白银运动的历史渊源及其久远影响
To further reduce equivalent series resistance and improve long term reliability , the leads are then soldered with lead free silver solder
为了进一步的减少等效串联阻抗和改善,长期的信赖度,引线是以无铅银焊锡来接焊