billionth

常见例句

A broken networked intelligence may be able to calculate pi to the billionth digit but not forward e-mail to a new address.
一個有損傷的網絡智能也許能計算出圓周率的第十億個數位，卻不能曏新地址轉發郵件；
And the researchers say the galactic map depends on a neutrino's mass being no more than 0.28 electron volts, less than a billionth of the mass of an atom of hydrogen, the lightest element.
研究人員還說，銀河系的搆成取決於中微子的質量，由此推斷出中微子質量的最小上限：不超過0.28電子伏特，該數值還不到一個氫原子質量的十億分之一。
As well as being very hot, the ionised gas of the corona (called plasma) has a superthin consistency. It is less than a billionth of the density of the hydrogen that makes up the main ball of the Sun.
日冕的電離氣躰（又叫等離子躰）不僅非常炙熱，而且異常稀薄，其密度還不到組成太陽主躰的氫氣密度的十億分之一。

Nano is a prefix (from the Greek word for dwarf) meaning a billionth of something.
FORBES: Tiny Miracles
The water droplets themselves can be as small as a nanometre (a billionth of a metre) across.
ECONOMIST: To make engines cleaner, add H2O
Broadly speaking, nanotechnology describes work on materials whose critical dimensions are measured in nanometers, or one-billionth of a meter.
FORBES: The Titan of the Teensy