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镎
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镎neptunium 【医】 neptunium Np 镎(1)鎿ná(2)锕系的一个放射性金属元素。是用中子轰击铀而制得的,银白色,最稳定的同位素半衰期约220万年 [neptunium]――元素符号Np
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oil for softening leather
oil-free compressor
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oil-free lubrication
oil furnace
oil fuse
oil fuse cutout
oil gag
oil gage
oil-gage
oil gallery
oil gas
oil gasification
oil-gas process
oil gas ratio
oil gathering system
oil gauge
oil-gauge
oil-gauge glass
oil-gauge pipe
oil-gauge rod
oil gland
oil glands
oilgolecithal ovum
oil groove
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更新时间:2026/7/19 17:40:58