【电学】秘密数字通信、例如在电报系统

SECRET digital communication, e.g. in telegraph systems

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相关词条

secret

keep sth. a secret from sb.

lock a secret in one's heart

Lanshi Micang; Secret Book of Orchid Chamber

secret compartment

private ledger【会计】;secret ledger【会计】

secret process

let sb. into a secret