短语词组短语symmetric key 对称密钥symmetric figure 对称图形;对称形;轴对称图形symmetric axis 对称轴symmetric method 对称法;对称焊法;符号法symmetric vibration 对称振动symmetric coupling 对称接口symmetric mode 对称模式symmetric state 对称态;翻译symmetric matrix 对称矩阵 返回 symmetric