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double concave
archit. 双凹
construct. 双凹的
earth.sc. 双面凹的
tech. 双凹形; 双凹 (的)
double-concave [ˌdʌblkɒn'keɪv, -kɑːn'-]
auto. 凹的
double concave
: 5 phrases in 4 subjects
Automobiles1
Construction1
Electronics1
Technology2