spring wheel造句

例句与造句

1. Two inventions current in EWT are the  " Binomial " , a mono-material balance-and-spring wheel combination mechanism using isochronically stable materials, and the " Diff閞entiel d Egalit?", a constant force device based in a spherical differential.
2. It's difficult to find spring wheel in a sentence. 用spring wheel造句挺难的