沪江网校开设英、日、法、韩、泰、德、西班牙等13国外语课程,涵盖升学应试、海外留学、工作商务等。丰富全面的课程类型,为不同需求的学习者提供学习方案。
class除了表示“班级”的意思,还会有“等级、阶级、阶层、类别、等级制度”等意思。 最开始的时候指的古罗马打仗期间召集起来的一群一群士兵,在军队里有各种各样的等级,它后来指古罗马社会里把人分成的6个等级,再后来就是现在的用法。 今天我们就用单词class来旧辅新知...
By employing Pd(OAc)2, Cs2CO3, or NaOH, and the new ligand (t-Bu)2PNP(i-BuNCH2CH2)3N (3a), an electronically diverse array of aryl bromides and chlorides possessing base-sensitive substituents (nitro, ester, and keto) provide coupling products with bulky aryl amines in good to excellent...
这本教材一共分为20个课时。 此外,lesson多用于指学习某种技能的课程,比如游泳课→swimming lesson。 lesson除了表示课堂学到的知识,还可以指生活中得到的经验教训: Never forget this lesson. 永远不要忘记这个教训。 词组teach sb a lesson就是教训某人,可以这...
životnímu cyklu produktů Microsoftu. Vrátit se na hlavní stránku
; (2) if \(\lambda \in {\mathbb {c}}\) such that \(\mathfrak {r}\lambda >0\) , then \(r(\lambda ,{\mathscr {a}})\) exists and for any \(f\in l^p\) it is given by the formula \(r(\lambda ,{\mathscr {a}}) f = \int _0^\infty e^{-\lambda t} p_t f\...
IVisualTreeService2::GetPropertyIndex method (Windows) MDM_eUICCs_Profiles02_01 class (Windows) MDM_Policy_Result01_MSSecurityGuide02 class (Windows) Menus Element GetMathAlphanumericCode function (Windows) Win32_UserProfile class (Windows) TraceLoggingThreadActivity::Id method (Windows) ID2D1Bitmap...
The reactions of the alkynes [Ar(CCH)3], [Ar'(CCH)2], and ToCCH (To = 4-MeC6H4) with the appropriate amounts of PPN[Au(acac)2] (acac = acetylacetonato) allow the syntheses of the anionic complexes PPN[Au{CCAr(CCH)2}2] (9), PPN[Au{CCAr'CCH}2] (10), PPN[Au{CCTo}2...
β-F elimination (onto Zr) then completes the reaction. There is no η2-olefin intermediate on the reaction path. DFT calculations seeking the energy and structure of the two carbenes Cp2ZrHCl[CF(CH3)] and Cp2ZrFCl[CH(CH3)] are also described. 展开 ...
Previously published work [10] shares some similarity with the work presented in this paper, in analysing the various explanations based on the stability and consistency metrics and combines them into an ensembled explanation across multiple XAI algorithms. However, this work [10] does not account ...