connected with friction (= the force that makes it difficult for an object to move along or through something)

Any two surfaces rubbing together produce frictional heat. 两个表面相互摩擦会产生摩擦热。

There must be a frictional force pulling the bottom of the ladder in. 一定有摩檫力将梯子底部向内拉。

involving disagreement and unfriendliness caused by people having different opinions

The band had a frictional relationship with their record company. 乐队与他们的唱片公司之间常有分歧。