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Benzylic ether phenolic resin is one of the main components of foundry polyurethane binder; its structure and preparation condition determine the performances of polyurethane binder.

苯醚型酚醛树脂是铸造用聚氨酯粘合剂的主要成份之一，它的结构及合成工艺条件决定了该类粘合剂性能。

Moreover,the selective oxidation of primary and secondary alcohols to corresponding carbonyl compounds with the multinuclear copper complexes Cul-Cu4 as catalysts have been conducted using TBHP and O_2/TEMPO,respectively.Among them,the copper complex Cu3 showed the best performance.On the performances of the two classes of oxidants,benzylic and heterocyclic alcohols could be effectively oxidized to carbonyl compounds.Specifically,the secondary alcohols could be effectively oxidized to ketones with excellent selectivity up to 100%in the presence of TBHP and the allylic alcohols could be effectively oxidized to aldehydes in the presence of O_2/TEMPO system.

实验结果还表明，在TBHP或O_2/TEMPO存在下，各配合物催化剂均能使各种取代芳香伯/仲醇以及杂环醇等以不同程度的转化率和选择性转化成相应的醛或酮，其中，配合物Cu3在O_2/TEMPO存在下可使苯甲醇和烯丙醇等以较高转化率和近100%的选择性转化成相应的醛，而对其它芳香醇和脂肪伯/仲醇等的催化性能则较差；在TBHP存在下，配合物Cu3则可使1-苯乙醇和其它仲醇以较高转化率和近100%的选择性转化为相应的酮，但对各类其它伯醇选择氧化的性能相对较差。

Even now I oftenattend theatrical performances of all sorts, but the action of the play must bespelled into my hand by a companion.

我多么想亲眼看到哈姆雷特的迷人形象，或者是那在艳丽多彩的伊丽莎白时代服饰中刮大风的伏尔斯塔夫！

Even now I often attend theatrical performances of all sorts, but the action of the play must bespelled into my hand by a companion.

我多么想亲眼看到哈姆雷特的迷人形象，或者是那在艳丽多彩的伊丽莎白时代服饰中刮大风的伏尔斯塔夫！

I sit on the rear seat of the bick with my face toward back way ,someone told me that old pan ,who was a colleague of mine in hotel 20 years ago , was coming to me but nothing to say and back home to rest .the background was before the wide gate of a theather and there were so many people gathering there waitting to enter to see the performances.

我骑在自行车的后坐上，是面向后的，老潘过来了，一个人说，他走了，没有说话，回去休息去了，背景是一个剧场大门口，很多的人流等待进场看演出。

"It's still in our hands and we have to focus on improving our own performances rather than wait for our rivals to slip up," said Bilic.

&它还在我们的手中，我们必须集中力量改善自己的状态，而不是等待我们的竞争对手溜起来&，说Bilic。

Excessive addition of nanosized cc-Ni2 has done no good to improve the performances of biphase electrode material.

过多的纳米α-Ni_2的添加无助于复相电极材料电化学性能的提高。

On the other hand, I am ill at ease with the frantic and blinkered pre-occupation of a crowd with their idol – be that a movie star, a football team, or, as in the case of Yushu, performances symbolising the crowd's culture.

另一方面，对于一大群人情绪激昂，认准了自己的偶像，表现狂热的场景，比如对电影明星、对橄榄球队，或者在玉树，对这象征着人们的文化的赛马表演，我就觉得特别不自在。

SO〓〓/M〓O〓 solid superacid was applied to the photocatalytic oxidation of organic pollutants for the first time. Porous SO〓〓/TiO〓 solid superacid catalysts with high specific surface area were prepared by sol-gel method. The photocatalytic degradation of bromomethane was used as model reaction. The influence of impregnation with H〓SO〓 solution on the structure of catalysts and their photocatalytic performance was systematically studied by using X-ray diffraction, X-ray photoelectron spectroscopy, N〓 sorption analysis applying BET method, UV-Vis diffuse reflectance spectroscopy, FTIR spectroscopy, O〓-TPD and photocatalytic activity measurement. The acidity of TiO〓-based catalysts was investigated by Hammett indicator method, NH〓-TPD and IR spectra of pyridine adsorbtion. The mechanism of superacidifing effects on photocatalytic performances such as the photocatalytic degradation rate of bromomethane, apparent kinetic constant and apparent quantum efficiency was discussed.The results indicated that SO〓〓 is combined with metal ions of TiO〓 in a chelating bidentate mode.

本文首次将SO〓〓/MxOy型固体超强酸催化剂用于光催化氧化有机污染物研究，采用溶胶-凝胶法制备了具有多孔性和大比表面结构的二氧化钛基固体超强酸光催化剂SO〓〓/TiO〓，以光催化降解溴代甲烷为模型反应，系统地研究了H〓SO〓浸渍处理对催化剂表面酸性及其气相光催化性能的影响，结合XRD、BET、XPS、FTIR、Hammett指示剂法、吡啶吸附红外光谱、NH〓-TPD、O〓-TPD、紫外可见漫反射光谱等多种表征手段，深入地讨论了超强酸化对TiO〓的改性机理，阐明了引起SO〓〓/TiO〓超强酸催化剂光催化降解溴代甲烷的转化率、表观反应速率常数和表观量子效率变化的本质原因。

In order to have better performances, I decide to change the engine into brushless.

在为了有更好的表演，我决定改变发动机到无刷。

At the rear was an innovative combination transaxle with the gearbox, clutch, differential, and inboard-mounted drum brakes.

在后面是与变速箱，离合器，差的创新结合变速，和内侧安装鼓式制动器。

For more people can apprecaite and have the master work, there is reproduction painting appears in the market, the large various selection of paint,the high saturation of color plus the plentiful sfumato, to make the reproduction perfect copy and detail as original painting, so as to meet the requirment of amateurs who love art paintings,they do not need to pay high price to get classical paintings.

颜料色域广，色彩饱和度高，色彩层次丰富，图像色彩还原真实，能完美的复制原作，满足艺术爱好者欣赏，艺术爱好者们不用支付昂贵的价格就能拥有经典油画。