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hypotheca; hypovalve | |||
lower shell | |||
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lower housing; lower part of housing |
下壳 : 57 phrases in 14 subjects |
Agriculture | 1 |
Automobiles | 7 |
Aviation | 1 |
Earth sciences | 1 |
Electronics | 5 |
General | 8 |
Hydroelectric power stations | 1 |
Life sciences | 1 |
Metallurgy | 9 |
Nautical | 1 |
Navigation | 1 |
Oil / petroleum | 10 |
Technology | 9 |
United Nations | 2 |