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二叠纪/系; 二叠系/纪 | |||
二叠纪〔系〕 | |||
二叠系【纪】; 二叠系纪的 | |||
二叠纪; 二叠系 | |||
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二叠纪的; 二叠系的 | |||
二叠纪 (Period) | |||
English thesaurus | |||
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Perm (MichaelBurov) | |||
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Perm (MichaelBurov) |
Permian : 32 phrases in 7 subjects |
Construction | 1 |
Earth sciences | 7 |
Geology | 3 |
Geophysics | 2 |
Hydroelectric power stations | 2 |
Mining | 1 |
Technology | 16 |