| 摘要 |
A register for regulating the flow of air toward an inner combustion region has a plurality of spaced and inwardly directed vanes affixed between two annular members. A plurality of spaced guide means peripherally disposed around the vanes, are mounted across the two annular members. A sleeve which is linearly movable upon the guide means enshrouds the vanes by a variable amount. By moving the sleeve, the inward flow of air past the vanes can be regulated.
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