proton to electron mass ratio造句

例句与造句

1. In that situation the mass of the neutralizing positive charge carriers is nearly 1836 times smaller ( the proton to electron mass ratio ), while the radiation pressure on the positrons doubles the effective upward force per unit mass, so the limiting luminosity needed is reduced by a factor of H " 1836 * 2.
2. It's difficult to find proton to electron mass ratio in a sentence. 用proton to electron mass ratio造句挺难的