Biconcave Programs双凹规划
biconcave function双凹函数
biconcave lens[光] 双凹透镜;双凹面镜;两面凹镜
biconcave vertebra双凹椎
biconcave programming双凹规划
a biconcave lens双凹面透镜
同义词：concavo-concave
ADJ（形容词） (of a lens) having concave faces on both sides; concavo-concave (镜片)两面凹的