观察孔

1.eyesplit  2.wicket  3.sightingslit  4.sighthole  5.sightwindow  6.observingaperture  7.sight  8.escapementinspectionhole  9.inspectionhole  10.pokingdoor  

观的英语翻译：

look at; sight; view; watch
【医】 view

察的英语翻译：

examine; look into; scrutinize

孔的英语翻译：

aperture; bore; foramen; hole; os; ostium; vulva
【化】 hole; opening
【医】 apertura; aperturae; aperture; bore; coel-; foramen; foramina; hiatus
mesh; opening; pore; Pori; porosity; porus; trema