… zincate by means of sodium sulphide. White paste or powder often containing zinc oxide or other impurities. It is used, … masses, sometimes luminescent, almost insoluble in water. Often contains sulphate or other impurities. Used either …
… covers, in particular : (1) Millstones and grindstones , often of considerable size, for crushing, grinding, pulping, … etc., which retain their identity and function even after application of the abrasive material (i.e., tools …
… flow or to the electrical quantity being measured. They are often fitted in a bypass or shunt off the main or connected … (generally slide valves), the transmission (endless screw, camshaft, gears or other systems), and a recorder or an …
