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dihedral angle [daɪ'hi:drəl 'æŋg(ə)l]
polym. 双面夹角
skydive. 上反角
wind. 二面角; 双面角
dihedral cathedral angle [daɪ'hi:drəl 'æŋg(ə)l]
railw. 反角
dihedral angle: 8 phrases in 2 subjects
Business2
Technology6