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	The distribution and morphology of microplastics in coastal soils adjacent to the Bohai Sea and the Yellow Sea 期刊论文 OAI收割 Geoderma, 2018, 卷号: 322, 页码: 201-208 作者: \| 收藏 \| 浏览/下载：28/0 \| 提交时间：2020/06/17 Microplastics Coastal soils Shape types Abundance Spatial distribution Surface morphology
	滨海城市大气环境中发现多种微塑料及其沉降通量差异期刊论文 OAI收割科学通报, 2017, 卷号: 62, 期号: 33, 页码: 3902-3909 作者: 周倩; 田崇国; 骆永明 \| 收藏 \| 浏览/下载：41/0 \| 提交时间：2020/07/07 microplastics coastal city atmospheric environment shape types deposition flux seasonal variation 微塑料滨海城市大气环境形貌类型沉降通量季节性变化
	Technology on fabrication of precise SiC aspherical mirror (EI CONFERENCE) 会议论文 OAI收割 2011 International Conference on Materials and Products Manufacturing Technology, ICMPMT 2011, October 28, 2011 - October 30, 2011, Chengdu, China Zhang Z. 收藏 \| 浏览/下载：28/0 \| 提交时间：2013/03/25 This paper represents a technique to produce the large size optical aspherical mirror by using reaction-bonded silicon carbide to meet the material requirements of the space used mirrors based on the characters comparison of all types mirror material. Techniques are described in this paper including the bonding procedure of silicon carbide to form a mirror shape the CCOM technology for aspheric grinding polishing on a home-developed tool -FSGJ-2 and the aspheric profilometry. A specialized Offner Null lens is also developed to measure the aspherical mirror with laser interferometer. With the technology depicted in the paper a 502mm 298 mm off-axis SiC aspherical mirror is successfully made with a surface accuracy better than 1/50rms the final result meets the design requirement. (2011) Trans Tech Publications.