fuhen shitsu ryōdattara
1. If the invariant mass…; If the rest mass…
Noun
1. If the invariant mass…; If the rest mass…
1. if it's the case
1. eternal; everlasting
2. invariant
1. mass
2. quality and quantity
1. universal; general
1. universal; omnipresent
1. not be found
1. If it comes out; When it comes out
1. If/when topped; If/when crowned