keying ring — ограничительное кольцо
oil wiper ring — маслосъемное кольцо
operating ring — установочное кольцо
pentatomic ring — пятичленное кольцо
support ring — поддерживающее кольцо
The English-Russian dictionary general scientific. 2015.
lactone — lactonic /lak ton ik/, adj. /lak tohn/, n. Chem. any of a group of internal esters derived from hydroxy acids. [1840 50; LACT + ONE] * * * ▪ chemical compound any of a class of cyclic organic esters (ester), usually formed by reaction of a… … Universalium
Meldrum's acid — IUPAC name 2,2 Dimethyl 1,3 dioxane 4,6 dione … Wikipedia
Oxocarbon — An oxocarbon or oxide of carbon is an inorganic compound consisting only of carbon and oxygen.[1][2] The simplest and most common oxocarbons are carbon monoxide (CO) and carbon dioxide (CO2). Many other stable or metastable oxides of carbon are… … Wikipedia
Oxyde de carbone — Un oxyde de carbone est un composé chimique constitué d une combinaison d atomes de carbone et d oxygène uniquement[1],[2]. Les plus simples et les plus communs des oxydes de carbone sont le monoxyde de carbone, CO, et le dioxyde de carbone, CO2 … Wikipédia en Français
