1) SEM dating
SEM测年
2) SEM test
SEM测试
1.
And according to SEM test,we observe and study the modal character of hydrating product of cement mixed setting accelerators,and analyze its mechanism of hydration,it has main action of the promotion and application of quick-setting additive projects.
采用XRD对选用的两种速凝剂进行成分分析,通过试验比较两种速凝剂的性能差异,并利用SEM测试,观察研究了掺速凝剂的水泥水化产物的形貌特征,分析其水化作用机理,对速凝剂在工程中更好地推广应用具有重要作用。
3) In-situ observation with SEM
SEM原位观测
4) Scanning electron microscopy
SEM
1.
The surface morphology, composition and structure character of the Fe-N-O thin films were studied by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM).
通过扫描电子显微镜(SEM)、光电子能谱(XPS)和透射电子显微镜(TEM)等先进实验分析手段对二极溅射沉积Fe N O薄膜的形貌与结构进行了分析。
5) dating
[英][deit] [美][det]
测年
1.
Th-U-Pb dating method of electron probe microanalysis and its application foreground in uranium geology research;
电子探针Th-U-Pb微区测年方法及其在铀矿地质研究中的应用前景
2.
Study on the High-Resolution Sequence of Luminescence Dating in the Loess of West Mountain of Peking Area;
北京西山黄土高分辨率释光测年研究
3.
Its 270℃thermoluminescence peak can be used to dating.
陶瓷中常含有相当数量的氧化铝成分,研究氧化铝的热释光性特征对进一步提高古物测年的精确度至关重要。
6) SEM images
SEM照
补充资料：C14测年
含c物质的c14含量在c元素中所含的比例几乎是保持恒定的，如果含c物质一旦停止与大气的交换关系，则该物质的c14含量不在得到新的补充，而原有的c14按照衰变规律减少，每隔5730年减少一半，因此只要测出含c物质中c14的减少的程度，就可以计算出它停止与大气进行交换的年代，这就是c14测年的原理。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条