Hardness
51hardness — O ole a, lā au …
52carbonate hardness — Hardness of water due to presence of dissolved bicarbonates of calcium and magnesium which can be removed by boiling and hence the term ‘temporary hardness.’ Synonyms: (French.) dureté temporaire; (German.) temporäre Härte, Carbonathärte;… …
53permanent hardness — hardness of water not removed by boiling; it is usually due to sulfates and chlorides …
54temporary hardness — hardness of water removed by boiling; it is due to soluble bicarbonates, which lose CO2 on boiling and precipitate as normal carbonates …
55Hardness ever of hardiness is mother. — См. Нужда закон изменяет …
Большой толково-фразеологический словарь Михельсона (оригинальная орфография)
56hardness tester — Смотри Склерометр …
57hardness tester — Смотри Твердомер …
58hardness of heart — Жестокосердие …
59Indentation hardness — tests are used to determine the hardness of a material to deformation. Several such tests exist, wherein the examined material is indented until an impression is formed; these tests can be performed on a macroscopic or microscopic scale. When… …
60Vickers hardness test — A Vickers hardness tester The Vickers hardness test was developed in 1924 by Smith and Sandland at Vickers Ltd as an alternative to the Brinell method to measure the hardness of materials.[1] The Vickers test is often easier to use than other… …