这台光谱仪是新引进的，精密程度很高。
This imported spectrocomparator has a high level of precision.
它们的复杂程度，精密程度，真的令人叹为观止。
And their complexity, their sophistication, is something to really marvel at.
他们以一种非常精密的程度发现，当气体稍微被加热一点儿时(只有几百万分之一开尔文)，振动会减慢，这说明黏性增大了。
Critically, they found that when the gas was heated a tiny fraction (only by millionths of a degree Kelvin), the oscillation slowed, signifying an increase in viscosity.
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