... 指示压力计 indicating pressure gauge 指示环 indicating ring 指示；指出；表示；标记；象征；迹象；读数；显示；指标 indication ...
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松开固定时间子午线指示环的定位螺丝。
Loosen the setscrew that secures the ring with the time meridian indicator.
松开赤经兼小时刻度环的定位螺丝后把赤经兼小时刻度环“0小时”位置对准赤经指示箭头。
Set "0 hour" on the R. A. and hour graduation ring to the R. A. indicator after loosening the graduation-ring setscrew.
一旦确定正确的流量设置，则将记忆止动装置朝着指示器板的开启位置顺时针方向旋转，直到记忆止动环触到指示器板为止。
Once correct flow rate setting has been established, slide memory stop clockwise towards open side of indicator plate until memory stop ring hits indicator plate.
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