简介：秘鲁央行12月20日公布的数据显示，10月黄金出口收入较上年同期减少17．2％，因发货量减少。lO月黄金销售量从上年同期的544，300盎司降至429，900盎司，出口额从9．07亿美元回落至7．51亿美元。

简介：Inthispaper,themicrostructureandhardnessofHG980Dheat-affectedzone(HAZ)atdifferentcoolingratet8/3werestudied,theimplantcriticalfracturestressunderthreediffusiblehydrogenconditionsweremeasured,andthehydrogen-inducedcracking(HIC)fractographofsteelHG980Dwereanalyzed.TheexperimentalresultsshowthatmartensiteexistsinHAZofHG980Dtillt8/3≥150s,thehardenquenchingtendencyofHG980Disgreater;Theimplantcriticalfracturestressisrelatedtodiffusiblehydrogencontentsignificantly,atlowhydrogenlevel,highrestraintstressisneededtonucleateHIC,thefractographismainlymicrovoidcoalescence,butathighhydrogenlevel,onlysmallrestraintstresscancauseHICoccurrence,thefractographismainlyquasicleavage.Itisveryimportanttochooseultra-lowhydrogenweldingconsumabletoweldsteelHG980Dtopreventhydrogen-inducedcracking.

简介：海南省近期集体签约28个项目，总投资935亿元。此次签约项目涉及工业制造和基础设施建设项目。签约金额在百亿元以上（含百亿元）的项目有4个，10亿元以上100亿元以内（含10亿元）的项目有12个。据了解，这些项目都是从海南省各市县申报项目中精心选出的，