Incremental optical electric axial Angle encoder usually adopts zero position grating providing absolute zero position in order to prevent from data fault during electricity failure suddenly.

为了防止突然断电时造成数据错误，增量式光电轴角编码器通常采用零位光栅提供绝对零位信号。

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Drawing from their debut disc, "Absolute Zero, " it displayed four-part vocal harmonies and a knack for arrangement, as guitars chimed under and around the voices.

WSJ: The State of Things | Coachella Valley Music & Arts Festival | Jim Fusilli