| 单词 |
needle nozzle |
| 释义 |
needle nozzle needle nozzle[′nēd·əl ‚näz·əl] (mechanical engineering) A streamlined hydraulic turbine nozzle with a movable element for converting the pressure and kinetic energy in the pipe leading from the reservoir to the turbine into a smooth jet of variable diameter and discharge but practically constant velocity. |
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