Additional drag is caused by transrapid ' s linear generator ( inductive pickup ) which produces the electricity foremostly needed for levitation 额外的阻力来自为了使车厢悬浮的线性发电机（感应抬升）所发出的电场。
2.
Extreme ultraviolet radiation and x - ray created by magnetic field around the sunspots also cause the earth s atmosphere to heat up and expand . this will create additional drag to satellites or space shuttles orbiting at low altitudes and eventually pull them out of orbits earlier than expected 太阳黑子附近的磁场所产生的远紫外辐射和x射线，使地球大气温度上升并且膨胀，这对在较低轨道运行的人造卫星或穿梭机带来阻力，令它们比预期提早偏离轨道。
3.
The major content of the thesis is to simulate the mechanical interaction between two contacting fibers according to the experimental results obtained by petrich and koch . the initial model does n ' t accord with the experimental results well without an additional drag incorporated into it 本论文的主要内容是根据petrich和koch实验观察到的结果，对两纤维直接接触相互作用的过程建立了数学模型，增加了一个与速度相关的阻力，并对这个附加阻力进行了详细阐述。
