有効 ゆうこう試験 しけん事象 じしょうでしょう
yūkō shi kenji shōdeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 有効試験事象

1. Likely a valid test case.; Probably a valid test case.

Polite
Presumptive
Conjecture
Computing