The relationship between Killing zone boundary and defense efficiency is expounded from the point of view of covering protected object capability by air-defense missile and its shift of fire.

从地空导弹对所保卫目标的掩护能力、火力转移能力等方面，论述杀伤区远界与防卫效率的关系。

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In this review, tumor targeting, killing efficiency, safety and the evaluation of oncolytic viruses therapy are discussed.

文章简要综述了溶瘤病毒肿瘤治疗的靶向性、杀伤性、安全性和疗效监测。

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The higher the cell concentration, the lower the killing efficiency.

细胞浓度越高，杀伤作用越低。

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