词汇	validity bit
释义	validity bit 有效性位
随便看	optimal delay optimal density optimal density of sampling points Optimal density segmentation optimal deployment optimal deployment model optimal deployment of water resources optimal deployment theory optimal depth optimal depth search optimal desensitization optimal desige optimal desigh optimal design optimal de sign optimal design attack angle optimal designing optimal design method optimal design methods optimal design model optimal design of arch dam optimal design of engineering Optimal design of head shaft of chain conveyor optimal design of mechanism Optimal design of the structure