翻译和例句：
in size. They are more affected (影响) by surface forces, like friction (摩擦力) and wind, than by gravity ……
there is no friction (摩擦力)! It’s greener because it uses less energy. The train can carry up...), according to China Daily. So there is no friction (摩擦力)! It’s greener because it uses less ……
Q: Why can a boiled egg spin (旋转) in a vertical (垂直的) position?A: American and Japanese scientists carried out an analysis of the forces at work on a spinning egg.They said that the friction (摩擦力 ……
is smooth (光滑的). When they went downhill, there was little friction (摩擦力).Horse hair is smooth (光滑的). When they went downhill, there was little friction (摩擦力).However, going uphill was against ……
forever until some other force acts on it. On Earth, fidget spinners always experience friction (摩擦力 ……
unless some other force acts on it. On Earth, fidget spinners always experience friction (摩擦力) when ……
(摩擦力) between the lid and the can.The marbles greatly reduce the friction (摩擦力) between the lid ……
) as a motor (发动机). They gather energy in the fingers and arms. The friction (摩擦力) between the thumb... muscles (肌肉) as a motor (发动机). They gather energy in the fingers and arms. The friction (摩擦力) between ……
far and move too fast. The fuzz creates drag (阻力) in the air and friction (摩擦力) against the court... far and move too fast. The fuzz creates drag (阻力) in the air and friction (摩擦力) against the court ……
friction (摩擦力) to slow them down. Elon Musk, founder (创始人) of US space company SpaceX... be very little friction (摩擦力) to slow them down. ……
to supermarkets to collect waste cardboard and paper, and we also did tests to reduce friction (摩擦力) so ……
摘自： We made it![BY ZHANG ANYU, 21ST CENTURY TEENS STAFF, 21世纪学生英文报·初二版]
and paper, and we also did tests to reduce friction (摩擦力) so that our cart could run faster.” When the cart ……
of the air, the acceleration (加速度) of gravity, and the friction (摩擦力) of the table surface – it should ……
beneath the screen to change the amount of friction (摩擦力) between the display and the user’s finger ……
. They then used sensors (传感器) to measure friction (摩擦力) between the slippery side of banana skin and the ground ……
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