Preparation of graphene compositefield emission cold cathode to achieve graphene in the composite structure of the quasi-two-dimensional distribution is our plan.
制备石墨烯复合材料的场发射冷阴极,实现石墨烯在复合材料中的准二维结构分布。
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This image is a composite of archival Hubble data taken with the Wide Field Planetary Camera 2 and the Advanced Camera for Surveys.
这幅图像是由哈勃存档数据合成而来,这些数据来自宽视野2号行星照相机和高级测量照相机。
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This composite image shows a small region of the ChandraDeep Field North.