折痕角度越大，吸热表面积越大，也可以折叠的更快。

Wider hinges also fold faster, because there is more surface area to absorb energy.

youdao

折痕角度越大，吸热表面积越大，也可以折叠的更快。

Wider hinges also fold faster, because there is more surface area to absorb energy.

youdao