主要考虑了摩擦力、空气阻力等因素对弹丸的速度和轨迹的影响。
The effects of frication, air frication on the speed and trajectory of projectiles have been fully considered.
在进行高山滑雪运动时，雪板与雪地之间的摩擦力、空气阻力以及推雪阻力都是影响高山滑雪运动员滑行阻力的主要因素。
In the alpine skiing, the primary determinant influencing the skiing resistance includes the friction between snowboard and snow, the air resistance and the counterforce from pushing snow.
减小列车空气阻力和降低列车交会压力波，既矛盾又统一，列车气动头部外形设计需要综合考虑各种因素。
The aerodynamic shape design of train head should consider all kinds of factors because the relation between reducing aerodynamic drag and air pressure pulse may be conflictive and uniform.
在利用单摆测重力加速度实验中，有复摆、空气浮力、空气阻力、摆角等多种误差因素。
In the experiment of measuring gravity acceleration with a pendulum, a few error factors are existed, such as complex pendulum, air buoyancy, air resistance and initial displacement.
在利用单摆测重力加速度实验中，有复摆、空气浮力、空气阻力、摆角等多种误差因素。
In the experiment of measuring gravity acceleration with a pendulum, a few error factors are existed, such as complex pendulum, air buoyancy, air resistance and initial displacement.
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