偶而

The odd L yrast states can be either symmetric or antisymmetric, while the even L ones are only symmetric under the permutation of the two components.

我们证明了，对于奇角动量和偶角动量，yrast态有不同的行为，即在两分量间的置换下，奇角动量态可以是对称的，也可以是反对称的，而偶角动量态仅存在对此解。

Later on very satisfied with my job, Ran has promised Faced with the matter can not shirk, I think Rafah water, and I had last night package that now No rest, helpless eldest rhetoric, Granville forced lured Lee, I Bush said, reluctantly agreed to set a lever that a packet of us, on the evening of her wedding night under eldest, theoretically then leader of the midnight when the bigger, mental breakdown, it can not continue, then it by three days and three nights without sleep and still wearing a pair of bandbox legends of the dynamic dual flash Superman small Mexican appearances on the then leader sleep rest, even to continue.

后来酒劲下去，然已骑虎难下答应的事没法推脱，就想着拉我下水，而我昨夜已包过，至此还没休息，无奈老大花言巧语，威诱利逼，我盛情难却，勉强同意，定下杠杠说我俩包一台，上半夜归老大上，然后老大理论上将在午夜的时候体力不支，精神崩溃，无法为继，然后就由可以三天三夜不睡觉而且依旧精神饱满神采奕奕传说中的动感小超人偶闪墨登场，然后老大就睡觉休息，偶来继续。

Benzoin condensation reaction is usually promoted by toxic cyanide ion, so the development of more convenient and efficient synthetic methods, which is environmental benign, is highly desired.

传统上，苯偶姻通过使用剧毒的氰化钠或氰化钾催化安息香缩合反应而得，所以苯偶姻的简单高效和对环境无污染的制备方法很有意义。

The origin of marriage matchers at archaic times got along not only with economic factors but also with demands of innovations of connubial systems and progress of human in civilizations.

媒妁的肇始当在对偶婚向专偶婚过渡的父系氏族社会时期，而非专偶婚形成之后。

Ythagorean hodograph curves enjoy a number of remarkable properties, such as, its offset curves have exact rational representations; the arc length function of a Pythagorean hodograph curve is simply a polynomial function of the curve parameter; and the lower degree Pythagorean hodograph curves have intuitive geometrical interpretation.

H曲线具有诸如有精确的有理 Offset、弧长函数可由多项式函数表示以及几何解释优美等一系列优良性质。基于复分析方法，避免了实分析讨论中出现的复杂表示及繁琐计算，构造了满足给定 C1 Hermite插值条件且以C1拼接连续的三次 PH曲线偶。该曲线偶可灵活处理拐点，从而克服了一般三次 PH曲线因恒凸而无法处理拐点的缺陷。

Aha logogriphs elicited a more negative ERP deflection than did No-aha logogriphs in the time window within 1500-2000 ms (N1500-2000) and 2000-2500 ms (N2000-2500) after onset of the logogriph. Maps of the difference wave (P200-600) showed strong activity in the midline parieto-occipital scalp. Dipole analysis localized the generator of P200-600 in the left superior temporal gyrus and near parietotemporo-occipital cortex areas.

差异波的地形图表明，P200-400在中后部活动最为明显，偶极子溯源分析的结果显示，P200-400可能主要起源于左侧颞上回以及顶枕联合区附近；LNC1与LNC2均在左侧前额部有明显的激活，偶极子溯源分析的结果显示，LNC1可能起源于ACC附近，而随后的LNC2可能主要起源于PCC。

It was found that the samples PVP-PdCl2-CdCl2 and PVP-PdCl2-HgCl2, compared with PVP-PdCl2, exhibited much higher catalytic activity and dechlorination selectivity, and the yields of the coupling by-products were obviously decreased. For example, when p-chloroaniline was used as substrate, the reaction time was shortened to 1/8, and the yield of dechlorination product was about 25 times as much as the original one, and when p-chlorotoluene was used as substrate, the yield of coupling by-product catalyzed by bimetallic catalyst was 1/390 of that catalyzed by monometallic catalyst.

与负载型单金属催化剂PVP-PdCl2相比， PVP-PdCl2-CdCl2和PVP-PdCl2-HgCl2对氯代芳烃脱氯有高得多的催化活性和脱氯选择性，且偶联副产物显著减少；以对氯苯胺为底物时，双金属催化下的反应时间缩短为单金属催化下的1/8，而脱氯产物收率提高25倍；底物为对氯甲苯时，双金属催化下的偶联副产物仅为单金属催化下的1/390。

The possible reason is that doped Zr〓 ion enters the interstitial sites for its small ionic radius and no dipole complexes were formed. Monovalent ion F〓 has been reported to improve the scintillating performance greatly. Our results show that Agrand diagrams of F〓: PWO crystals obey an modified Cole-Cole equation. The crystals present similar dielectric relaxation phenomena to but have much higher activation energy than that of RE〓: PWO crystals, which originate from the 〓 dipole complexes. The co-doping of trivalent Y〓 and pentavalent ion Nb〓 does not always show a better scintillation performance than that of solely doped samples, which could be attributed to the existence of the 〓 dipole complexes, which counteract the solely doping effect.

而Zr〓由于离子半径太小，可能进入间隙位置，不形成类似的偶极缺陷；一价负离子F〓的掺入提高了晶体闪烁性能，阻抗谱测试结果表明F〓：PWO晶体Argand图符合修正的Cole—Cole方程，晶体同样表现出介电弛豫现象，并具有比RE〓：PWO晶体中高得多的弛豫激活能，可能起源于形成的〓偶极缺陷；Y〓和Nb〓双掺的PWO晶体并没有显示出两种离子单掺优点的叠加，阻抗谱测量结果表明，在双掺晶体中可能形成〓偶极缺陷，使两者掺杂作用相互抵消。

When diaryl ketones were treated in DMF promoted by samarium metal with TMSCl as activator, diaryl ketones react with DMF followed by a carbene rearrangement to afford benzoins unexpectedly, with benzils were obtained as byproducts, the formation of which may be explained as a result arising from the auto-oxidation of benzoins. Further investigation found the reaction could also proceed smoothly when I〓 was used as an activator. The reaction could occur as well in SmI〓/THF, though benzoins were obtained in relatively low yields.

发现当有活化剂TMSCl存在时，金属钐能有效的促进二芳酮和DMF的发生反应，偶联后发生卡宾重排，意外地得到苯偶姻类化合物，同时伴随着少量的二芳基二酮副产物生成，我们推测二芳基二酮的生成可能从苯偶姻的自氧化而来；进一步的研究表明，用一定量的I〓活化金属钐，该反应也可以顺利的进行，并且可以得到相对更好的实验结果。

Recently, ''click'' reaction has been regarded as a simple and versatile coupling strategy for the functionalization of nanoparticles.12 It is a green and ecient coupling approach, utilizing the copper-catalyzed 1,2,3-triazole formation between azides and terminal acetylenes.

近来，&点击&反应已经被看作一种用于纳米粒子功能化的简单而万能的偶联策略。[12] 它是一种绿色而有效的偶联方法，利用叠氮化物和端乙炔之间的铜催化1，2，3三氮唑的形成。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。