unitless quantity造句

例句与造句

1. \alpha is a unitless quantity.
2. Johansson proposes that there are logical flaws in the application of quantity calculus, and that the so-called dimensionless quantities should be understood as " unitless quantities ".
3. The wavelength-dependence may also be expressed as a " Quantum efficiency ", or the ratio of the number of photogenerated carriers to incident photons, a unitless quantity.
4. Dividing the first value by the second ( to obtain the number of photons ) results in 2?0 18 photons / m 2 / s ( " photons " is a unitless quantity here in the same way that " cycles " is for frequency ( cycles / s ), so the units are technically s / m 2 ); finally, dividing by 100 2 to convert from s / m 2 to s / cm 2 results in 2?0 14 photons / cm 2 / s.
5. It's difficult to find unitless quantity in a sentence. 用unitless quantity造句挺难的