Explanatory notes
… * * * Unalloyed beryllium is used in the manufacture of windows for X‑ray tubes; as components for nuclear reactors; … also serves in the preparation of many alloys, for example with steel (spring‑steel, etc.); with copper (e.g., the … (in blocks, pellets, cubes, etc.), products (bars, rods, wire, sheets, etc.), and articles. Goods made up into …