4 KudoZ points awarded for this answer. Comment: "Thank you to everyone for your help! I understand the concept of a sink: a device or system where some extensive entity is absorbed (McGraw-Hill Dictionary of Scientific and Technical Terms). A sink is a physical entity or location: "defects that annihilate at sinks," "it is a strong points defect sink site" (http://www.mrs.org/meetings/fall98/absbook/AbstractBookJ.html). I may be wrong, but it seems to me that the word сток here refers to a process, not a location. СТОК, 1. см. стечь (Ожегов). Происходит интенсивный сток и аннигиляция дислокаций и коллективный атомные перемещения. Вакансии не успевали стекать во время выдержки при нагреве и в процессе охлаждения. Can sink refer to an action in this sense in English? So, the word "migration" is interesting. But, На границах зародышей появляется повышенная концентрация вакансий, создаваемая при поглощении дислокаций перемещающейся границей. I am still not perfectly clear on what happens that enables the dislocations to annihilate, but it seems obvious that something has to move. I hope that "dislocation migration and annihilation" is adequate. Best wishes, Jim"