Slowly open bleed "b" until differential gauge rises to 2 PSI and close.

慢慢开启排气“B”直到压差表上升到2P si为止，然后关闭。

youdao

Slowly open bleed "b" until differential gauge rises to 2 PSI and close.

慢慢开启排气“B”直到压差表上升到2P si为止，然后关闭。

youdao