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单词
planet gear
释义
WordReference Random House Unabridged Dictionary of American English © 2024
plan
′
et gear′,
[
Mach.
]
Mechanical Engineering
any of the gears in an epicyclic train surrounding and engaging with the sun gear. Also called
plan
′
et wheel′.
1915–20
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更新时间:2026/4/12 14:24:31