简介:相对增益阵列(RGA)大多数应用的矩阵阶数都是较小的(n=2,3或4).我们从矩阵方程Φ(A)=1/2J2的实数解出发,应用矩阵方程Φ(A)=1/nJn的实数解在G-等价下的不变性和实数解的分块构造法,研究了Φ(A)=1/4J4的实数解的一些问题.
简介:ReactionsofCuSCNwithtetramethylthiuramdisulfideinCH3CNinthepresenceofstyreneandN,N,N',N',N'-pentamethyldiethylenetriaminegaverisetoanewcopper(Ⅰ)complexofN,N'-dimethyldithio-cabamate{[Cu(S2CNMe2)]2}n.ThetitlecompoundcrystallizedinthetriclinicP-1spacegroupwithlatticeparametersα=0.7610(4)nm,b=0.8911(4)nm,c=0.9268(5)nm,α=68.66(1)°,β=83.88(2)°,γ=79.31(2)°,V=0.5748(5)nm^3,Z=2.Thecompoundhasaunique1DchainstructurecomposedofCuSCSCuSCSeight-memberedringsandapairofCu-Sbonds,thestructureofwhichhasbeendeterminedbysingle-crystalX-raycrystallography.Theisolationofthiscompoundmayprovidesomehelpfulinformationforthecauseoftheinductionperiodsofthereverseatomtransferradicalpolymerization.
简介:摘要:随着国际化进程的日益推进,国际间的合作越来越频繁,在我国的生产中国际材料的应用也越来越普遍。因此,对国际材料应用的研究是势在必行的。本文是对昆明地铁工程隧道设备盾构机盾体制作中所使用材料S355J2+N的焊接研究。本文通过对S355J2+N材料成分分析、焊接性分析、焊接试验等手段对S355J2+N厚板的焊接进行了可行性研究。为S355J2+N材料在以后生产中的应用提供了见解方案。
简介:OnceIwasaconceitedgirl.Iwouldneveraccepttheadviceofothers.Iwasneverreadytohelpothers.Sometimeswhensomeonewasintrouble,Ilikedtoplayajokeonhimorher.Somanyclassmatesdislikedme.MyteachersoftentriedtoChangeme,butIwouldn'tlisten.
简介:Thereareanumberofphrasesbuiltontheword“put”,suchasputby,putfor,putacross,putoverandsoforth.Theexpression“puttingoneon”isamongthem.Youtellapersonsomethingthathefindsdifficulttobelieve,andhemaylookatyoucloselyandask:“Areyouputtingmeon?”Hedoes-n蒺tthinkyouareserious.Perhaps,youarejokingwithhim,teasinghim,try-ingtotesthisreaction(反应).Theexpression“puttingoneon”isclosesttothephrase“toputoneoveronaperson”,meaningtotrick,tode...