![]() Ophthalmic optics - Contact lenses - Part 9: Ageing by exposure to UV and VISible radiation (in vitro method) 眼科光学 接触镜 第9部分:紫外和可见光辐射老化试验(体外法) |
![]() Environmental testing requirements and methods for broadcasting receivers,broadcasting teleVISion receivers,tape recorders and audio amplifiers 广播收音机、广播电视接收机、磁带录音机、声频功率放大器(扩音机)的环境试验要求和试验方法 |
![]() Preparation of steel substrates before application of paints and related products - VISual assessment of surface cleanliness - Part 1: Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previou 涂覆涂料前钢材表面处理 表面清洁度的目视评定 第1部分:未涂覆过的钢材表面和全面清除原有涂层后的钢材表面的锈蚀等级和处理等级 |
![]() Fresnel lens in DLP,CRT,LCOS and LCD projection teleVISion screen DLP、CRT、LCOS及LCD投影电视屏幕中的菲涅尔透镜 |
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