Lutein is dihydroxy - carotenoids with the ionone ring systems distributed widely in nature.叶黄素是含紫罗酮环的二 羟基 类胡萝卜素,在自然界广泛存在.Lutein and zeaxanthin are both dihydroxy - carotenoids with the ionone ring systems distributed wi...
OFDM is a type of modulation is called orthogonal frequency division multiplexing.OFDM是一种新型的调制方式,称为正交频分复用.Orthogonal frequency division multiplexing ( OFDM ) is a multi - carrier modulation method .正交频 分多路 复用是一种 多载波调制 技术...
He is abstracting a story for a book review.他正在为篇书评撰写故事梗概.The college published a drama review.学院出版了一份戏剧评论刊物。This article is the seventh biannual review on photometric analysis.本文是《分析试验室》定期评述中“光度分析”的第七篇文章.Such exemptions...
This paper will introduce progressive die of the commutators for micromotor.本文将就微型马达精密换向片的量产模具介绍说明.A novel harmonic micromotor actuated by force was proposed, whose basic operating principles were also described.提出了一种基于静...
David had changed his lodgings, leaving no address behind.戴维换了一间租屋，没留下地址。Pretty soon after my arrival I found lodgings.我到达之后，很快就找到了住处。I'm on the hunt for lodgings.我正在寻找住所....