所有镜片都要求铅含量相同,被用于保护眼睛防止激光,X光等辐射的伤害.4-6-8 基线,
2.5公分厚度,在6基线上的0.75铅制眼镜.涂有氩元素.
英语翻译ALL LENSES REQUIRE PB LEAD EQUIVALENCY,AND WILL BE USED
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