国产精品成人网站,亚洲欧美精品在线,色一情一乱一伦,又大又紧又粉嫩18P少妇

ASTM G154-16是個關于暴露在陽光日曬、持續(xù)潮濕、加熱而導致產(chǎn)品性能老化的測試方法，現(xiàn)行標準修訂于2016年。

1. Scope

1.1 This practice is limited to the basic principles for operating a fluorescent UV lamp and water apparatus; on its own, it does not deliver a specific result.

1.2 It is intended to be used in conjunction with a practice or method that defines specific exposure conditions for an application along with a means to evaluate changes in material properties. This practice is intended to reproduce the weathering effects that occur when materials are exposed to sunlight (either direct or through window glass) and moisture as rain or dew in actual usage. This practice is limited to the procedures for obtaining, measuring, and controlling conditions of exposure.