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Passive Defence

['pæsɪv dɪ'fens]
缩写, 苏格兰语 PD
passive defence ['pæsɪv dɪ'fens]
军队 Passive measures taken for the physical defence and protection of personnel, essential installations and equipment in order to minimize the effectiveness of hostile action
Passive Defence
: 1 短语, 1 学科
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