beryllium – a steel-gray, bivalent, hard, light, metallic element, the salts of which are sweet: used chiefly in copper alloys for better fatigue endurance, in springs, and in electrical contacts. Symbol: be; atomic weight: 9.0122; atomic number: 4; specific gravity: 1.8 at 20° c
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berilliy – tuzlari shirin bo'lgan temir-kul, ikki tomonlama, qattiq, yengil, metal element, asosan, mis quvurlari yordamida, charchoqni chidamliligi, buloqlardagi va elektr aloqalari uchun ishlatiladi. Belgilar: be; atom og'irligi: 9.0122; atom raqami: 4; o'ziga xos tortishish: 1,8 dan 20 ° c gacha
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