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contraction ratio [kən'trækʃ(ə)n 'reɪʃɪəu]
agric. 收缩比率
avia. 收敛比
met. 收缩率; 压缩比
space 收缩比; 收敛比 (指面积)
tech. 气流的压缩系数; 锥度比; 收缩系数
contraction ratio: 15 phrases in 6 subjects
Aviation3
Chemistry1
Metallurgy1
Plastics2
Space5
Technology3

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