这一发展只有在引入电动发动机和升降机之后才可能实现。

This development was only possible with the introduction of electric-powered engines and lifts.

youdao

通常，在引入甲泛葡胺之前的脊髓造影是引起蛛网膜炎的原因。

Often, myelography prior to the introduction of Metrizamide was the cause of arachnoiditis.

youdao

笛卡尔在引入怀疑论方面非常有名。

Descartes is very famous for introducing his discussions though skepticism.

youdao

Because it's so important. And I should add and also under reversible work, where the external pressure is equal to the internal pressure.

而且我还要说应该在外部压强,和内部压强相等的,可逆过程中引入它。

麻省理工公开课 - 热力学与动力学课程节选

He introduced the concept of electronegativity which was a measure, therefore, it is quantitative, of the atom's ability to attract electrons within a covalent bond and developed a scale of electronegativity.

他引入了电负性这一概念,一个反映着原子在成共价键时吸引电子的能力的数据标度，因此这是数量上的，在共价电子中,电子原子能吸引电子,并发展为一定规模的电负性。

麻省理工公开课 - 固态化学导论课程节选

And I wanted to do it a different way which is a little bit convoluted, but it introduces the idea of a thermodynamic cycle, and it's something that we're going to use a lot in the class.

现在我将用另一种,有些复杂的办法来推导这一关系，在这一过程中引入,我们今后会常接触到的,热力学循环的概念。

麻省理工公开课 - 热力学与动力学课程节选