Translation of "fastholdelse" into English

2) hvis apparatet indeholder radioaktive stoffer, oplysninger om midlerne til fastholdelse af kilden i en holder eller om afskærmning

614. in the case of apparatus containing radioactive substances, information on the means of fixation of the source in a holder and on shielding;

Vi ved alle, at medlemmernes deltagelse i missionering er afgørende for at opnå både omvendelse og fastholdelse.

We all know that member participation in missionary work is vital to achieving both conversion and retention.