在无补偿直流牵引电动机中,通常采用主极极弧为圆弧的扩张气隙来改善换向器电位特性。
The opening air-gaps with circular main pole arc are usually used to improve the potential curve of commutator on non-compensable d. c. traction motors.
像人类一样,虎鲸也在全球范围内开拓了一系列不同的栖息地,占据了地球上的每一个海洋流域,拥有一个从一极延伸到另一极的帝国。
Like humans, killer whales have colonized a range of different habitats across the globe, occupying every ocean basin on the planet, with an empire that extends from pole to pole.
这笔经费将用于基础研究,新产品研发和发光二极管、含碳有机发光二极管的制造方面。
The cash will go toward basic research, product development and manufacturing of light-emitting diodes (LEDs) and carbon-containing organic light-emitting diodes (OLEDs).
The same nations and the short life expectancy of birth probably the lowest quality of life in other areas.
这一数字在下降,在上述国家,新生儿预期寿命较短,某些区域生活质量极低。
That happened not too long ago, but it was just a really fantastic display of all his work.
那是不久前的事情,但它真的极好地展示了他所有的作品。
She wrote a very compelling argument about O'Connor's fiction not about Wise Blood in particular, but about her stories.
她针对奥克纳小说写过一篇极有说服力的文章,并不只是针对《慧血》,而是针对奥克纳的所有故事。
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