Drag has a great impact on the lift-drag ratio, and the leading edge cut drag, which has only a two-dimensional effect, is one of the main sources of the total drag.
阻力对翼伞升阻比影响很大，前缘切口阻力是总阻力的主要来源之一，且是一种二维效应的阻力。
2
Drag reducing performances of Cetyltrimethyl Ammonium Chloride (CTAC) drag reducing fluid in two-dimensional channel under different experimental situations were measured.