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In the paper the principle of metal-cutting and Finite Element Analysis are introduced, based on which 3D FEA model of metal-cutting process is built.

中文摘要：本文通过深入研究金属切削原理和有限元理论，建立了金属切削的三维有限元模型，借助ANSYS和LS-DYNA有限元分析软件对金属切削过程实现了三维仿真分析。

Metal-cutting machine tools is the method of cutting metal blank increase the machine parts into the machine, which is manufactured machinery of machinery.

金属切削机床是用切削的方法将金属毛坯加工成机器零件的机器，它是制造机器的机器。

Metal machining is the most widespread metal-shaping process in the mechanical manufacturing industry.

金属机器加工理论和应用金属机器加工是在机械制造业里的最广泛的形成金属的过程。

A metal or metal-tipped spear, about2.5 meters(8 feet) in length, used in contests of distance throwing.

标枪一种用于投掷距离的比赛的金属的或带金属尖端的长矛，长约2.5米

The characterization and measurement of the metal content of the metallized fiber at home and abroad are introduced, and metal content determination of metallized fiber by density testing is proposed.

介绍了国内外表面金属化纤维中金属含量的表征和测量方法，提出了密度法测定表面金属化纤维中金属含量的方法。

Corrosion resistant metal used for mineral acid, up to 820℃ hydrochloric acid, for the use of cotrosion resistant metal.

耐矿酸、盐酸820℃为止仍能耐热，作耐蚀性金属之用。

The bonds of early transition metal monoxides are stronger than those of later transition metal monoxides.

这也说明了对于d轨道未半满的早周期过渡金属来说，d电子易于参与成键生成高氧化价态分子。

It was found that earlytransition metal monoxides ScO, TiO and VO do not form noble gas complexes, whilethe late transition metal monoxides coordinate one noble gas atom in forming thelinear NgMO(M=Cr, Mn, Fe, Co, Ni) complexes.

对于前过渡的ScO，TiO和VO分子，它们的9σ，1δ和4π价分子轨道能量很高，不能有效地与稀有气体原子形成络合物，而对于后过渡金属一氧化物则可以配位一个稀有气体原子形成直线型的NgMO(M=Cr，Mn，Fe，Co，Ni)络合物。

The 3d transition metal monoxides coordinate one noble gasatom in forming the linear NgMO(M=Cr, Mn, Fe, Co, Ni; Ng=Ar, Kr, Xe) complexes.(3) The group VB metal oxides MO_2 and MO_4 coordinate two and one noble gasatoms in forming the MO_2_2 and MO_4(M=V, Nb, Ta; Ng=Ar, Kr, Xe)complexes.

3第VB族金属二氧化物与两个稀有气体原子形成的MO_2_2(M=V，Nb，Ta；Ng=Ar，Kr，Xe)络合物，其四氧化物与一个稀有气体原子形成的MO_4(M=V，Nb，Ta；Ng=Ar，Kr，Xe)络合物。

Complexes 7-12, 16, 22 and 23 are dimeric molybdatesor dimeric tungstates, the central metal with citrate or malate in a molar ratio of 1:1. Theanions of these complexes have two metal atoms and two ligands. Each ligand acts as atridentate fashion via theirα-alkoxy,α-carboxy andβ-carboxy groups coordinated to eachmetal atom. Complex 13 is a monomeric molybdate. The citrate ligand coordinates tomolybdenum with itsα-alkoxy,α-carboxy andβ-carboxy groups in a tridentate mode.

其配阴离子中都含有2个金属原子和2个配体，且配体均以α-烷氧基、α-羧基和β-羧基氧与中心金属三齿配位。13是单核柠檬酸钼配合物，柠檬酸也以α-烷氧基、α-羧基和β-羧基氧与钼三齿配位。17和21分别为苹果酸钼、柠檬酸钨单核配合物，其中苹果酸、柠檬酸配体均以α-烷氧基氧和α-羧基氧与金属双齿配位。

I can still vividly recall the impressive scenes you gave. You were among my friends and relatives who accompanied me from my house to the seaport and when the porters were slow to show up, you obligingly carried my suitcase for me.

你对我的种种感人情意，使我记忆犹新，那天你随着我的亲友从家里送我上轮船，搬运工迟迟不来，你毅然替我提着皮箱上船。

St. Nicholas became the patron saint of Russia, where he was famous for his red cape, flowing white beard, and bishop's mitre.

圣尼古拉成了俄罗斯人的守护神，在那里，他以身披红斗篷，留着飘逸的白胡须，戴着主教法冠而闻名。