1.
a watertight compartment, joint, seal
水密室、 水密接合、水密封.
2.
intimate friends [friendship]
密友 [亲密的交情]
3.
A Scheme of Encryption and Decryption of Public Key Cryptosystems
一种公开密钥密码体制加密、解密方案
4.
Article9. State secrets shall fall into three categories: most confidential, classified and confidential.
第九条国家秘密的密级分为“绝密”、机密”、秘密”三级。
5.
Trade secrets must be kept secret.
商业秘密必需保密。
6.
dielectric (flux) density
电通(量)密度，电移位密度
7.
encryption with an 80-bit key
加密，使用 80 位密钥
8.
high desity assembly
高密度装配高密度组件
9.
oil pressure test for tightness
油密试验油压密封试验
10.
- Public key encryption and authenticatio
公开密钥加密与验证
11.
precision contact
精密触点， 精密接触
12.
To join or fit closely or tightly.
紧密连接，紧密配合
13.
pressurizing window
密封封口(电缆), 气密口
14.
Confidential or secret information.
内幕绝密或秘密的消息
15.
density:The quality or condition of being dense.
浓密:浓密的质量或情况.
16.
keeping a secret or furtive watch.
密密的偷偷摸摸的观察。
17.
weatherstripping,thresholds & seals
密封条，门槛及密封胶
18.
(4) any declassification of secret patents;
（四）保密专利的解密；