简介:ChinaNationalNon-FerrousMe-talsI/Ecorporation,InnerMon-goliaBranchwilltakepartinthe“1991AmericanLosAngelesExhibition”tobeheldatshrineAuditoriumonSept.16,1991.TheCorporationmainlyengagedinthetradeofREproducts,nonferrousmetals,ferrousalloy,etc.OnthismeetingitwillsellallkindsofREproductsinclu-dingindividualREoxidesandmetals,Nd-Fe-B.magneticmate-rials,non-ferrousmetalswhich
简介:近年来,随着电子计算机及有关技术的飞速进步和广泛普及,它在社会各行业中的作用越来越重要。由于电子计算机用于解决问题的核心技术——软件技术本质上不过是数学原理的“程式化”,而且近年来数学用于解决实际问题的手段也在不断发展和进步,已逐渐改变了以往在工程、经济等实用领域只扮演辅助的、潜在的、从属的角色的地位,而在解决许多有关问题的过程中提任重要角色甚至主角,这就使数学作为“技术”的特征越来越明显了。
简介:Recently,reportersofXinhuaNewsAgencyin-terviewedDr.LiDongying,amemberofRELeadingGroupundertheStateCouncil,alsotheViceChair-manofChinaNon-FerrousMetalsSociety,abouthisopinionsonREindustryinChina.Mr.Lisaid:“RareEarthsarenotstructuralma-terials,sotheconsumptionismuchsmallerthanthatofaluminium,copper,ironandsteel.Buttheadding
简介:AutoCAD广泛应用于各种计算机辅助设计、辅助绘图等领域。AutoLISP是AutoCAD的表处理语言,本文介绍了扩充AutoLISP函数的方法和技巧,及通过对AutoLISP的扩充,怎样进行应用系统的设计。
简介:In2018,undertheguidanceofPresidentXiJinping'sThoughtonSocialismwithChineseCharacteristicsforaNewEra,China'srareearthindustryhasmadesteadyprogresswithsignificantimprovementinoverallefficiency,aconstantimprovementinmanagementsystemandasteadyimprovementindevelopmentquality.
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