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特殊的发光角度，价格较高。
Special light Angle, the price is higher.
youdao
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安装方便；可随安装环境变化调整发光角度。
Easy for installation; With the installation environment adjust the light Angle.
youdao
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安装方便；可随安装环境变化调整发光角度。
Easy for installation; With the installation environment adjust the light Angle.
youdao