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hafnium
释义
hafnium
Encyclopedia
工学
控制材料
释
hafnium
铪
化学元素。元素符号Hf，原子序数72，原子量178.49。属周期系ⅣB族。
工学
难熔金属
释
hafnium
铪
金属元素，化学符号Hf，原子序数72，原子量178.49，位于元素周期表中IVB族。
理学
铪
释
hafnium
铪
化学元素，元素符号Hf，原子序数72，原子量178.49(2)。属周期系ⅣB族。
Physics
hafnium
铪
72Hf
｛化｝
Astronomy
hafnium
缩写：Hf。铪
Chemistry
＞无机化学＞无机化学基本概念与无机化合物＞释义
hafnium
铪
随便看
risk of the third kind
risk on hazards of exotic species
risk perception
risk perception in the commission of crime
risk point
risk predictability training
risk prediction
risk preference
risk premium
risk prevention of collection
risk priority number
risk profile
risk rerception
risk retention
risk return tradeoff
risk-return trade-off
risk-return tradeoff
risks associated with physical activity and exercise
risk-sensitive stochastic control problem
risks in tourism
risk society
Risks of Investment Program
risk spreading
risk subjects in flight test
risk surveillance of food safety
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更新时间：2025/10/15 3:57:15