opa
abbr.
odd-paired 奇数对;
optical plotting attachment 光学测绘附加装置;
optoelectric pulse amplifier 光电脉冲放大器;
例句:
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Black - marketing and overcharging grew to proportions far beyond OPA policing capacity.
黑市交易与高价销售盛行,物价管理局难以控制.
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Progress of optical phased array ( OPA ) technology based on electro - optic material is summarized.
综述了基于电光材料的光学相控阵 ( OPA ) 的研究进展.
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Objective To evaluate the clinical application of OPA - K straight wire appliance.
目的了解 OPAK 滑动直丝弓矫治器的临床应用特点.