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单词
rack-and-pinion elevator
释义
rack-and-pinion elevator
rack-and-pinion elevator
An elevator having electrically driven rotating gear pinions mounted on the car; rotation of the gear pinions moves the car up or down on a stationary gear rack which is mounted vertically in the hoistway.
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event-based charging function
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event builder
event-by-event
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更新时间:2025/2/25 14:31:50