常見例句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. 研究了耙齒對地壓力、耙頭吸腔密封度等因素的影響，竝做出了調(diào)整和改進(jìn)。draghead teeth 耙齒 返回 draghead