国语自产偷拍精品视频偷,扒开腿挺进湿润的花苞,老师真嫩真紧好爽20P,小太正裸体脱裤子无遮挡

使用荧光紫外线设备对非金属材料进行曝露的测试方法

本测试方法是使用荧光紫外灯和冷凝装置进行曝露测试的基本原则和操作程序，旨在再现材料曝露在阳光下(直接或透过窗玻璃)和曝露在湿气中(雨水或露水)发生的老化效果。 这种做法限制于获取测量和控制的条件和曝光程序的方法，不能指定*适合要测试的材料的曝光条件。

附:ASTM G154 -12英文版本(摘抄)

Significance and Use

5.1 The use of this apparatus is intended to induce property changes associated with the end use conditions, including the effects of the UV portion of sunlight, moisture, and heat. These exposures may include a means to introduce moisture to the test specimen. Exposures are not intended to simulate the deterioration caused by localized weather phenomena, such as atmospheric pollution, biological attack, and saltwater exposure. Alternatively, the exposure may simulate the effects of sunlight through window glass. Typically, these exposures would include moisture in the form of condensing humidity.