AKM宣称这是唯一用3.3V单电源|稳压器提供地参考(ground-reference)2V RMS输出的音频D/A转换器，其它产品则用高电压供电来提供偏置的2V RMS，或者某些具有无电容耳机放大器，但是，只有这一款同时配...
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Ground reference point 接地参考点
ground-reference station 地面基准站
Ground reference plane 接地参考平面
GRP Ground Reference Point 地面参考点
ground reference 地面参照物 ; 接地基准
GRS Ground-Reference Station 地面基准站
ground reference frame 地面参考系
Ground reference maneuvers 近地参照机动
GRS Ground Reference System 地面基准系统
The Instrument Rating gives the ability to control the aircraft without reference to the ground or horizon, using flight and navigation instruments.
仪表等级赋予飞行员控制飞机的能力，而不用参考地面或地平线，只使用飞行和导航仪表。
That's because the 0 V reference is usually the famous ground.
那是因为0 V的参考电压通常是指众所周知的大地。
The method described in this paper has better suitability, especially has certain reference value for constructing Bridges under the difficult conditions, such as with weak ground, etc.
文中所述方法有比较好的适应性，尤其是对在较弱地基等困难条件下的桥梁施工有一定的参考价值。
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