例句與造句

1. In ladder approximation the Interaction kernel does not depend on the total momentum of the Bethe Salpeter amplitude, thus, for this case, the second term of the normalization condition vanishes.
2. While in Quantum electrodynamics the simplicity of the ladder approximation caused a lot of problems and thus crossed ladder terms had to be included, in Quantum chromodynamics this approximation is used quite a lot to calculate hadron masses, since it respects Chiral symmetry breaking and therefore an important part of the generation these masses.
3. It's difficult to find ladder approximation in a sentence. 用ladder approximation造句挺難的