Perhaps, the researchers said, the mechanism also had gearings to predict the positions of known planets.
研究人员说，这台机器上可能还有这样一些齿轮，它们用于推测其它已知行星的位置。
Results for the Brake Arranged at the Input End of Precise Gearings
制动器布置于精密齿轮传动系统输入端的效果
The calculation for the bending fatigue strength of tooth roots for marine gearings
船用齿轮齿根弯曲疲劳强度计算
In a factory building there are wheels and gearings
一所工厂里有机器和齿轮
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