欲先将样办置于燃烧炉柜内，设置自动计时装置。

Prior to introducing the specimen and holder into the cabinet, set both electrical switches for automatic timing.

youdao

欲先将样办置于燃烧炉柜内，设置自动计时装置。

Prior to introducing the specimen and holder into the cabinet, set both electrical switches for automatic timing.

youdao