短语词组短语twin -core photonic crystal fiber 双芯光子晶体光纤multiple twin crystal 复挛晶twinning twin crystal 孪生twin crystal nucleation 孪晶形核nanoscale twin crystal Ni coating 纳米孪晶镍镀层crystal twin [晶体]双晶;翻译;孪晶 返回 twin crystal