After producing the lava, the researchers calculated its reflectivity in both the molten and solid states.

制造出熔岩之后，研究人员计算了熔岩在熔融状态和固态下的反射率。

While in its molten state the composition of the metal is tightly controlled to minimize impurities and ensure hardness.

当它处于熔融状态时，我们对其成分进行了极为严苛的管控，以最大可能的减少杂质，确保其硬度。

In its molten state, magma is a mixture of dissolved gases and melted minerals.

在熔融状态下，岩浆是溶解气体和熔化矿物的混合物。

Darwin's Theory of Evolution strongly implied the Earth was at least millions of years old, and Lord Kelvin, a hugely respected physicist and engineer, confirmed the Earth was ancient, given that it must have cooled from an initially molten state.

达尔文的进化论强烈暗示地球至少有几百万年的历史，而凯尔文勋爵，一位广受尊敬的物理学家和工程师，也证实了地球是古老的，因为它一定是从最初的熔融状态冷却下来的。