If you stare at one quadrant, your visual cortex will emit a corresponding frequency, which is detected by an electrode cap covering your head.
当你注视某块屏幕时，你头上所带的电极帽将会监测到你大脑视皮层所发出的那个相对应的频率。
Arkansas Third District comprised twenty-one counties in the northwest quadrant of the state and was one of Americas most rural congressional districts.
阿肯色州的第三选区由21个县组成，这些县占据了阿肯色州西北部1／4的面积，是美国国会所有选区中乡村最多的地区之一。
Objective To evaluate the clinical effects of one-shot and quadrant root planing on chronic periodontitis.
目的比较根面平整一次法和四分法治疗慢性牙周炎的临床疗效。
Objective To evaluate the clinical effects of one-shot and quadrant root planing on chronic periodontitis.
目的比较根面平整一次法和四分法治疗慢性牙周炎的临床疗效。
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