引用第2楼peterxu于2010-02-08 18:49发表的 :
我的意思是0.12in/s四舍五入到1位小数就是0.1in/s了.可ASTM里是这样描述的.
A4.6 Requirements % g! H7 K7 p/ i' }) L$ {, m
A4.6.1 A toy shall be considered a flammable solid if it
ignites and burns with a self-sustaining flame at a rate greater ( ~% L( ]& w5 h3 s. L& n
than 0.1 in./s (2.5 mm/s) along its major axis.
.......
欢迎光临 安规网 (http://bbs.angui.org/) | Powered by Discuz! X3.2 |