... depends on what you're talking about, if it is this kind of text:
*************************
* WEAPONS_RU.PROPERTIES *
*************************
#####################################################################
# Hudson Mk.I
#####################################################################
Hudson-MkI.default Default
Hudson-MkI.2x250lb 2x 250lbs Bombs GB
Hudson-MkI.4x250lb 4x 250lbs Bombs GB
Hudson-MkI.2x500lb 2x 500lbs Bombs GB
Hudson-MkI.2x250lbAS 2x 250lbs (AS) Bombs GB
Hudson-MkI.4x250lbAS 4x 250lbs (AS) Bombs GB
Hudson-MkI.none Empty
#####################################################################
# Hudson Mk.III
#####################################################################
Hudson-MkIII.default Default
Hudson-MkIII.2x250lb 2x 250lbs Bombs GB
Hudson-MkIII.4x250lb 4x 250lbs Bombs GB
Hudson-MkIII.2x500lb 2x 500lbs Bombs GB
Hudson-MkIII.2x250lbAS 2x 250lbs (AS) Bombs GB
Hudson-MkIII.4x250lbAS 4x 250lbs (AS) Bombs GB
Hudson-MkIII.4x250lb_4x100lbs_AS 4x 250lbs + 4x 100lbs (AS) Bombs GB
Hudson-MkIII.none Empty
... this goes in the i18n folder, section weapons.ru.properties (i18n folder is in your "Files" folder (if you've got one) ...
... if you're talking about this:
87AB5520AC63D2B0 Bomb100lbAS_Mk1
533BC29A582A69F2 BombGun100lbAS_Mk1
70C12E0800655CE8 Bomb250lbAS_Mk1
24583AFA14230616 BombGun250lbAS_Mk1
... it goes nowhere, it is just a reminder so that you know which java class file does what ...