Traditional passive protection can't adapt to this new situation, then enhanced defense and proactive defense are proposed.
传统的被动防护已不能适应当前的安全形势，纵深防御和主动防御应势而生。
Alveolar macrophages (AM), which are enhanced by GM-SCF, are an essential piece of the innate immune response and are known to contribute to host defense against flu infections in animal models.
肺泡巨噬细胞(AM)被GM - SCF强化，这是先天免疫应答的重要部分，已知在动物模型有助宿主防御流感病毒感染。
Power system of the "three lines of defense" concept put forward, more enhanced low-frequency-low-voltage load shedding equipment status.
电力系统“三道防线”概念的提出，更增强了低频低压减载设备的地位。
Power system of the "three lines of defense" concept put forward, more enhanced low-frequency-low-voltage load shedding equipment status.
电力系统“三道防线”概念的提出，更增强了低频低压减载设备的地位。
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