摩擦英语怎么说
- When the rats detect the scent, they stop and rub their legs to indicate a sample of infected.
- Buck rubs also have a scent produced by glands in the foreheads of deer that is transferred to the tree when the rub is made.
- So there is also a frictional force.
- Because both sexes of white-tailed respond to buck rubs by smelling and licking them, rubs may serve a very important additional function.
- It was found that when a white-tailed buck makes a rub, it moves both antlers and forehead glands along the small tree in a vertical direction.
- Maglev doesn't rely on the friction of wheels on track.