The exact number is a state secret.

准确的数字属于国家秘密。

He was accused of revelation of state secret.

请不要泄露我的机密。

The real performance of the aircraft, however, remains a state secret.

J-10的真实性能，仍然是一个国家秘密。

Referring to any state secret in private contact or correspondence;

在私人交往和通信中涉及国家秘密的；

Article 3. The technique of commercial cipher is deemed as state secret.

第三条商用密码技术属于国家秘密。