So it's not entirely impossible that free-floating planets have hot cores, cold surfaces, and an intermediate layer, where water could exist in some fluid form.
所以，存在一种可能，不受约束的漫游星有炙热的内核，寒冷的表层，和一个特别的中间层，在那水是液态的。
Treaties at the end of the cold war led to the decommissioning of thousands of warheads. Their energy-rich cores are converted into civilian reactor fuel.
冷战结束后的条约导致几千弹头退役—这些丰富能源的弹头转化成民用核反应堆燃料。
Based on domestic materials used in the Phenolic Urethane Cold Box Process (PUCB), the relationships between coremaking parameters and the properties of cores have been studied.
在立足于国产制芯原材料的基础上，研究了三乙胺冷芯盒工艺对砂芯性能的影响。
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