为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

An RF system for the CSRe (cooling storage experimental ring) is designed and manufactured domestically. The present pap......

The Isochronous Mass Spectrometry is a high accurate mass spectrometer.A secondary electrons time detector has been deve......