包括节流刻度板和安装五金件。
Throttling index plate and mounting hardware is included.
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灯具均附有刻度板，方便调整照射角度。
With scale plate, convenient for adjusting radiation angle.
拆卸两个紧固螺栓，提起阀门上的刻度板。
Remove the two hold-down bolts and lift index plate from valve.
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模块上移
模块下移
不移动