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security rating | |||
security level | |||
safety level | |||
safety class | |||
safe class | |||
safety class (IEC WTGS Class) | |||
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safety level | |||
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safety class |
安全等级 : 22 phrases in 13 subjects |
Automobiles | 1 |
Aviation | 3 |
Bridge construction | 1 |
China | 1 |
Computer networks | 1 |
Cryptography | 3 |
Engineering geology | 1 |
Information technology | 3 |
Nautical | 1 |
Navigation | 1 |
Nuclear and fusion power | 2 |
Space | 1 |
Technology | 3 |