In a cunning economy, Mr Sauter USES the battery pack itself as the Bob of the pendulum.

出于经济眼光，索特使用电池组本身充当钟摆的浮子。

youdao

In a cunning economy, Mr Sauter USES the battery pack itself as the Bob of the pendulum.

出于经济眼光，索特使用电池组本身充当钟摆的浮子。

youdao