It also had an extremely low coefficient of friction, making other materials slide right off it.

它还有一个非常低的摩擦系数，让其他物质都从它旁边滑走。

Bo, tell me more about the coefficient of friction.

Bo, 告诉我更多关于摩擦系数的信息。

The coefficient of friction has no units, cannot be negative, is typically in the range of  somewhere between 0 and 2, and is experimentally determined.

摩擦系数没有单位，不能为负数， 通常在 0 到 2 之间的某个范围内，并且是通过实验确定的。