| Subject | English | Chinese |
| econ. | the unbreakable limitation | 不能改变的责任范围 |
| tech. | unbreakable bond | 强力胶合 |
| tech. | unbreakable bond | 不可裂开的胶结 |
| IT | unbreakable cipher | 不易破译密码 |
| telecom. | unbreakable cipher | 不可破密码 |
| cryptogr. | unbreakable code | 不可破密码 |
| tech. | unbreakable glass | 不碎玻璃 |
| interntl.trade. | "unbreakable" limitation | 不能改变的责任范围 |
| busin. | unbreakable limitation | 不能改变的责任范围 |
| met. | unbreakable metal | 锌基压铸件用韧性合金 (商品名：含5.25~5.75Al；杂质的容许最大含量为：0.1Cu, 0.1Fe, 0.005Cd, 0.005Sn, 0.007Pb) |
| tech. | unbreakable slate | 不碎石板 |