热的金属一冷下来就收缩。
热金属一开始变冷就收缩。
评述了含钼的发光材料、仿金合金、热致收缩化合物、自润滑材料在我国的研究新进展。
Some new progress of research on molybdenum containing new material in China were reviewed.
这是至少在43年中最大的热大气层收缩。
This is the biggest contraction of the thermosphere in at least 43 years.
这是至少在43年中最大的热大气层收缩。
This is the biggest contraction of the thermosphere in at least 43 years.
应用推荐