0 1,000,000,000th written as a word -- 第十億個
1 one of a billion equal parts of something -- 十億分之一
a/one billionth of a second 十億分之一秒
The ear can normally detect 1-billionth of an atmosphere of sound pressure level, hence it is incredibly sensitive.
The park also features a model, in 1:1 billionth scale, of the sun and inner planets of our solar system.
A nanometer is a billionth of a meter.
In 1973 the one billionth barrel of oil was pumped from the nearby oil field.
A nanometre is one billionth of a metre, or approximately 10 hydrogen molecules lying end to end.
Put simply, it is the application of material sciences at around the nanometre scale—that is, one billionth of a metre.
By contrast, the time taken to access a given byte of information stored in random-access memory is measured in billionths of a second, or nanoseconds.
The team cooled fermionic lithium-6 to less than 150 billionths of one kelvin above absolute zero using infrared laser cooling.
