Tìm kiếm
Pulley-block
01
a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope
Ví dụ
Từ Gần
Tìm kiếm
a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope