| 凹腔 cavity | 凹腔型 reentrant | 凹腔谐振器 dumb-bell resonator,reentran... | 凹节 gab | 凹节杆 gab lever | 凹角 concave angle | 凹边 concave edge | 凹边锉 hollow-edged file | 凹进 backoff | 凹进部分 recess | 凹透镜 concave lens | 凹部 dent | 凹部电压 valley voltage | 凹部电流 valley current | 凹镜 concave mirror | 凹陷 hollow | 凹陷口 fossaperturate | 凹陷成盘形 dish in | 凹陷泉 depression spring | 凹陷湖 downwarped lake | 凹陷花边 gorge | 凹陷角 angle of chamfer | 凹陷骨折 depressed fracture | 凹雕 intaglio | 凹面 camber concave |
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