查询词典 Br

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如果你有足够的知识游戏的用户界面力学，使这个键盘为你工作，你有足够的知识来映射你的钥匙，提供自己的相同的利益的价格都没有-没有繁琐的工作，通过硬件故障和不兼容-和做多，速度远远超过它这个产品 ship.br /顺丁橡胶/可使您节省时间。

According to the H NMRstudy, it was found that the protons on the cyclopentadienyl ring of 〓 were not splitted, but when one proton on the cyclopentadienylring was substituted by methyl, that is in〓 complexes, thefour protons on the ring were splitted into four groups,the 〓 between the onesignal and the others is large, the total splitting is over 2ppm. The splittings werealso affected by the halides linked with the titanium, they increase according to theorder of CI, Br, I. By the study of the 〓 Sn NMR, it is found that the chemicalshifts of 〓 are present in low field. It is assume that the large space strain causesthe angles of the tin linked with ligands deviate from the normal tetrahedral anglesresults low field shift for 〓Sn. And by MS study,there were no molecular ions for 〓 complexes in the spectra. However, for 〓 when X=CI,Br,NCO and Ar is tolyl or phenyl group,there were molecular ions,but theirabundances were very small,and no that for the iodide was found.

钛上的卤素对茂环氢的裂分也有影响，依〓，Br，I顺序，卤素对茂环氢的裂分依次加大；通过对〓的研究发现，以上这些化合物〓的化学位移都出现在低场，认为大的空间张力造成的锡的键角偏离正常的锡的四面体键角是造成〓化学位移出现在低场的原因；对这些化合物质谱的研究发现，〓系列化合物得不到分子离子峰，而〓系列的化合物，当X=〓，NCO和苯环上不带取代基或只带甲基时，则出现分子离子峰，但丰度很低，而相应的碘化物和其它化合物则没出现分子离子峰。

The translational energy distributions of Br and Br(superscript *) were found to consist of two components which should come from the radical channel and secondary dissociation process, respectively.

在平动能分布中发现两个高斯分布，推测其中主要是C-Br的快速解离，而高能宽分布则来自于CH2Br自由基的二次解离过程。

The translational energy distributions of Br and Br^＊ were found to consist of two components which should come from the radical channel and secondary dissociation process, respectively.

在平动能分布中发现两个高斯分布，推测其中主要是C—Br的快速解离，而高能宽分布则来自于CH2Br自由基的二次解离过程。

The translational energy distributions of Br and Br* were found to consist of two components which should come from the radical channel and sec-ondary dissociation process, respectively.

在平动能分布中发现两个高斯分布，推测其中主要是C—Br的快速解离，而高能宽分布则来自于CH2Br自由基的二次解离过程。

The effect of modification between BR monomer and trimer is similar, photovoltage and photocurrent intensities of Q-CdS are increased by 5 times and 1 time individually.

BR对Q-CdS薄膜表面修饰后，可大大增强Q-CdS的光电响应，BR单体与三聚体的修饰作用相似，光电压强度增加5倍，光电流增加1倍以上。

The effect of liquid isoprene rubber on properties of NR/BR compound,physical properties and thermal air aging property of its vulcanizate was investigated and compared to that of aromatic oil.

以液体聚异戊二烯橡胶为反应型增塑剂，研究LIR对NR/BR混炼胶性能、硫化胶物理性能和耐热空气老化性能的影响，并与添加芳烃油的NR/BR并用胶进行对比。

To improve the selectivity, the Co/Mn/Br catalyst system with ethanal as an additive was studied and the reaction conditions were also optimized, which were as follows:the amount of ethanal 10%(mole ration base on the substrate), reaction temperature 100℃,reaction time 30min,the oxygen pressure 0.2MPa, the amount of the composite catalyst Co/Mn/Br 7%,the mass ration of different ingredients 2:2:1. Under these conditions, the yield comes to 24.10% and the selectivity reaches 75.03%.

为了提高反应的选择性，论文初步研究了以乙醛作为添加剂条件下各工艺参数的影响，并进行正交优化，得出最佳条件为：乙醛加入量1：10，反应温度100℃，反应时间30min，氧气压力0.2MPa， Co/Mn/Br混合催化剂加入量7%，质量比2：2：1，在此条件下，反应产率为24.10%，选择性可达75.03%。

BR is embedded in the purple membrane and organized in trimeric unit arranged in a hexagonal twodimensional crystalline lattice, there are about 30 lipid molecules surrounding a BR trimer.

BR分子在紫膜中以三聚体的形式存在，并形成二维的六角型晶格，每个三聚体周围约有30个脂质分子。

It was found that some main structural factors influencing the RI of organophosphates are 7 substructures such as ＝CH2,≡C—, aaC—(where "a" refers to a chemical bond in the aromatic ring),＝O, O, Cl and Br, which were related to the molecular skeleton of organophosphates, substituent groups on phenyl ring, and alkyls binding to the bond of P—O.

结果表明，影响不同固定相上OP色谱保留的主要结构因素都是由7个ETSI描述子对应的子结构碎片，即：＝CH2，≡C—， aaC—，＝O，—O—， Cl和Br。其中子结构aaC—，＝O和—O与OP化合物母体骨架密切相关，而＝CH2，≡C—，—Cl和—Br反映支链或取代基的变化。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。