24小时热门版块排行榜    

查看: 239  |  回复: 0

tornadozyb

捐助贵宾 (正式写手)

高分子自组装教教主

[求助] 我们老师出了一道题,我们不知道该怎么做,求指导哈~~谢谢

4. Describe, using clear sketches, what you would expect to see in a thin (couple of μm)section of a blown film of linear polyethylene between crossed polarizers under a high magnification optical microscope. Section a is cut parallel to the extrusion direction, while section b is cut perpendicular to it. First draw the slice, indicate the directions of extrusion and of the light beam. Take account of the resolution limit of an optical microscope.

该怎么答阿,求解
回复此楼
已阅   关注TA 给TA发消息 送TA红花 TA的回帖

智能机器人

Robot (super robot)

我们都爱小木虫

找到一些相关的精华帖子,希望有用哦~

科研从小木虫开始,人人为我,我为人人
相关版块跳转 我要订阅楼主 tornadozyb 的主题更新
信息提示
请填处理意见