Adapting rotary lamp holder, easy installing.
可选择旋转灯头，方便安装；
Protective cover for a lamp, set including a lamp and a protective cover, method of installing a source in a lithographic apparatus.
灯保护罩，含灯和保护罩的装置，光刻器械中安装光源的方法。
Protective cover for a lamp, set including a lamp and a protective cover, method of installing a source in a lithographic apparatus.
灯保护罩，含灯和保护罩的装置，光刻器械中安装光源的方法。
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