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overspeed protection unit | |||
overspeed protection device; emergency governor; overspeed protective device | |||
over-speed protective device | |||
safe device against over-speed | |||
overspeed device | |||
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overspeed protection |
超 速 保护装置 : 2 phrases in 2 subjects |
Hydroelectric power stations | 1 |
Technology | 1 |