sun gear

短语

[机] 太阳齿轮

词形变化

sun gears 复数 sun gears

释义与例句

n.
  1. 1.

    The central gear wheel of an epicyclic gear train; the central gear in planetary gear box, which spins the planet gears

词汇关系

名词

上位词 3

gear cog wheel gear wheel

词源

By analogy to a sun with planets rotating around it.

来源：wiktionary