着発 ちゃくはつ信管 しんかんではありませんでした
chakuhatsushinkandewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 着発信管

1. Was not a timed fuse.; Was not a detonator.

Past/Perfective
Negative
Polite
Formal Register
Military