centrifugal cleaning

apostrophe editing Ashchykol' Ozero bench mark monument cosmic-ray lab degree day eubacteria exhaust-gas purifier gear backlash kobinski lomonite (laumontite) lymph node Pilot Ship pine-nut pit-a-pat pomp rock prostatic utricle (or prostatic vesicle) retraction ring of uterus sodium bisulphate transmission gear size turrets