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dubnium
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dubnium
Encyclopedia
理学
放射性元素
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dubnium
𬭊
人工放射性元素,元素符号Db,原子序数105,半衰期最长的同位素的质量数268。属周期系ⅤB族。以俄罗斯杜布纳联合核子研究所所在地杜布纳(Dubna)命名。
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cold central plant recycling
cold chain circulation
cold chain for food
cold chain logistic for aquatic products
cold chain maintaining
cold chamber die casting
cold compress instruments
cold crack
cold cropping
cold crucible
cold crucible continuous casting
cold crust-hot mantle
cold current
cold damage of high pour point crude reservoir
cold-dampness disturbing spleen
cold dark matter
cold dark matter model
Cold Dew
cold dew wind in rice
cold discharge
cold dish
cold dish room
cold drawing
cold-drawing
cold drawing; cold stretching
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