求翻译：密押是银行之间事先约定的，在 发送电报时由发电行在电文中加注的密码，经收报行核对相符，即 可确认电报的真实性是什么意思？

TEST KEY prior agreement between the bank, in the telegram sent by the power line message in the filling of the password, check the line by the close match, you can verify the authenticity of the telegram

Secret is between banks, prior agreement of the sending telegrams to the message in the power generation and annotation of the password, the bank reconciliations, that is consistent with the authenticity may confirm telegram

The telegraphic test key is between the bank agrees beforehand, when transmission telegram by the electricity generation line in the telegram text the replenishment password, after the report line of checkup match case, then confirms the telegram the authenticity

Test key is a prior agreement between the Bank, sending telegrams by power lines in the message when filling in the password, after closing at check in line, you can confirm the authenticity of the telegrams

It escorts to be between bank previously agreed upon while being dense, while sending the telegram by power generating password that conduct annotate in text, walk through receiving telegraph and check that agrees, can confirm the authenticity of the telegram