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undergrate blast | |||
understate blast | |||
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forced draft by blowing | |||
down blast | |||
underblast; undergrate blast | |||
downdraft |
нижнее дутьё : 14 phrases in 8 subjects |
Energy industry | 1 |
Forestry | 1 |
Makarov | 3 |
Mechanic engineering | 3 |
Metallurgy | 1 |
Shipbuilding | 2 |
Silicate industry | 1 |
Technology | 2 |