基本解释耙头同根派生 英汉例句In addition, the influence of drag-teeth's pressure against riverbed and sealed degree of the draghead were also tested, and some adjustments and improvements were made. 研究了耙齿对地压力、耙头吸腔密封度等因素的影响，并做出了调整和改进。draghead teeth 耙齿