例句與造句

1. study on mesh theory of roller oscillating tooth gear drive and numerical value simulation of tooth profile contact area
   滾柱活齒傳動(dòng)的嚙合理論及齒廓接觸區(qū)數(shù)值仿真
2. It's difficult to find roller oscillating tooth in a sentence. 用roller oscillating tooth造句挺難的