自発 じはつ核 かく分裂 ぶんれつ

jihatsukakubunretsu

1. Not spontaneous fission.; Not self-induced fission.

1. Was spontaneous fission.

1. Spontaneous fission

1. Spontaneous fission of ; Self-induced fission of

1. It is not spontaneous fission.

1. It's not spontaneous fission.; It's not self-induced fission.

1. Was spontaneous fission.

1. Spontaneous fission.

1. It is not spontaneous fission.

1. Wasn't spontaneous fission.

1. Spontaneous fission, likely.; Probably spontaneous fission.

1. Was not spontaneous fission.; Was not a spontaneous fission event.

1. Wasn't spontaneous fission.; Wasn't a spontaneous split.

1. Spontaneous fission; Probably spontaneous fission

1. Was not spontaneous fission.; Was not a spontaneous fission event.

1. If it were spontaneous nuclear fission; If spontaneous nuclear fission occurred

1. if spontaneous fission; if it spontaneously fissioned

1. If spontaneous fission…; When spontaneous fission…