Preparative centrifuge tubes are made of polypropylene (sometimes polyethylene) and can withstand speeds up to 20,000 RPM. These tubes should be carefully examined for stress fractures before use....
; formed at one edge of a much thicker film (polymer example); or having length identical (thin-film example) or similar to the thickness of the supporting membraneFig. 3 Schematic illustrating the interplay...
1851IEC 61007:2020 Ed 3.0Transformers and inductors for use in electronic and telecommunication equipment - Measuring methods and test procedures电子和通信设备用变压器和电感器 测量方法及试验程序中国电子技术标准化研究院深圳振华富电子有限公司崔莹1959IEC...
and electronic devices in the fields of micro electron. ...
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