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化学元素 huàxué yuánsù
environ. chemical element elements and their compounds ; A substance made up of atoms with the same atomic number; common examples are hydrogen, gold, and iron (只有一种原子组成的物质。常见的例子是氢、金和铁。)
life.sc. chemical elements
phys. chemical element
sol.pow. silicon
space hafnium
化学元素: 40 phrases in 11 subjects
Agriculture2
Animal husbandry6
Architecture1
Chemistry1
Desert science3
Drilling1
Earth sciences3
General2
Metallurgy7
Solar power1
Technology13