The formula of reliability index is calculated in the origin space directly, so derivation and orthogonal transformation are avoided.

所用的可靠度计算公式直接在基本变量空间中求解，避免了繁琐的求偏导数和正交变换工作。

youdao

What I do find interesting is the origin of the universe, the shape of space-time and the nature of black holes.

我真正感兴趣的是宇宙的起源、时空的形状和黑洞的性质。

youdao

One of the leading explanations for its origin is that empty space contains some intrinsic energy that pushes the universe outward.

其起源的主要解释之一是空的空间含有一些固有的能量向外推动宇宙。

youdao

The typical Viennese coffee house -- an elegant institution with high ceilings, marble-top tables and a stack of newspapers to make one linger over an impeccable black brew with a customary glass of water -- may be more famously known than its Ukrainian cousin, but to trace back the origin of the communal coffee space, you have to go to Lviv, a Medieval city in western Ukraine.

BBC: Tracing the coffee house revolution to its Ukrainian roots

Virgin's Richard Branson has started Virgin Galactic in an attempt to sell suborbital trips to ordinary citizens, and Amazon.com 's JeffBezosJeff Bezos has started a company called Blue Origin to create a private suborbital space vehicle.

FORBES: Magazine Article

Amazon founder Jeff Bezos has always been incredibly secretive about his own space investment, a company called Blue Origin based near Seattle but with a rocket launch facility out in the wilds of west Texas.

FORBES: Billionaire Space Race: 2012 Will Be The Year Private Space Transport Takes Off