oil return mirror

[4sol]

Что это за зеркало?

start the lubricating station first, wait until there is oil in the oil return mirror of the lubricating box or delay for 1min to start the centrifuge

подождите, пока в масленке возврата масла не появится масло?

а зеркало это что-то типа перегородки, через которую можно видеть уровень масла?

[leka11]

м.б. это  oil return visor?

в ссылке 

https://patents.google.com/patent/CN203743793U/en

примерно в одном контексте, то  mirror  , то visor -

.....The front end bearing box I is connected with the oil tank through an oil return U-shaped balance part, an oil return mirror I, the rear end bearing box II, an oil return U-shaped balance part II and an oil return mirror II.

..... front end bearing housing I is connected with fuel tank through  oil return visor  II by the U-shaped equalizing feature II of oil return through  oil return visor  I, rear end bearing case II by the U-shaped equalizing feature I of oil return;

[4sol]

Понял, спасибо!