The main principle and applications to astrophysics of PCA are reviewed in this paper.

介绍了主成分分析法的原理和它在天体物理中的广泛应用。

youdao

Its main principle is dewatering by use of chemical treatment and mechanical extrusion.

它的主要原理是利用化学絮凝和机械挤压进行脱水。

youdao

There has been discussed the main principle and design method of two newly tested circuits - oil-addition circuit and safe-blocked circuit as well.

文中还着重阐述了两种新试验的回路—补油回路和安全闭锁回路的设计指导思想及具体设计方法。

youdao

But the main principle underlying all this is the respect of the Iraqi borders and the internal affairs of Iraq.

NPR: Maliki Assures Bush on Iraqi Force's Readiness

The main principle of agile programming is that developers must talk to each other often, and that they must talk to the business people setting requirements equally often.

ECONOMIST: The software-development industry

For Palestinian politicians, the task of fleshing out the reconciliation deal agreed on in principle last month between their two main factions, the Islamist Hamas and the more secular Fatah, rapidly returned to the fore.

ECONOMIST: Israel and Palestine