单色仪的原理是什么?有什么用?
asked 6 days, 4 hours ago
磕学家
拉曼活性(Raman active)是什么意思?
asked 1 week, 3 days ago
磕学家
* 辐照度是什么意思?
* 辐照度的单位是什么?
asked 1 week, 3 days ago
磕学家
什么是基体效应?
如何消除基体效应?
asked 7 months, 3 weeks ago
wiki
标样的NIST SRM 是什么意思?
asked 8 months, 1 week ago
wiki