词汇	顶对
释义	顶对 dǐng duì对本。谓利润和本钱相等。頂對
随便看	self-focusing fiber self-focusing fibre selffocusing laser self focusing laser self-focusing laser self-focusing lens self-focusing lens plate self focusing light self-focusing light self focusing lightguide self-focusing lightguide self-focusing mechanism self-focusing medium self-focusing microlens self-focusing of laser beam self-focusing optical fiber self focusing optical fibers self-focusing optical fibers self-focusing optical fibre self focusing picture tube self-focusing picture tube self focusing property self-focusing property self-focusing rectifier self-focusing rectifying apparatus