| 摘要 |
The invention relates to a rotor blade ( 22 ) for a wind energy installation ( 10 ), with the rotor blade ( 22 ) having at least one cavity ( 28 ). The cavity ( 28 ) is sealed to be gas-tight and is filled with gas, in particular air, in order to prestress the rotor blade ( 22 ), with the pressure of the gas being greater than or less than the average air pressure to be expected at the point of use of the rotor blade.
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