For his driving mechanism, as mentioned, choose with flat developable bodies of the same institution.

对与其驱动机构，正如后面所述，选用同立体式可展机构相反的机构。

youdao

For his driving mechanism, as mentioned, choose with flat developable bodies of the same institution.

对与其驱动机构，正如后面所述，选用同立体式可展机构相反的机构。

youdao