查询词典 re-reaction

Based on the-references on the thermal imidization of polyand the polymer composition analysis,the thermal imidization mechanism of SMA with aniline was demonstrated to be a two-stage consecutive reaction,in which a second-order reversible ring-opening reaction of SMA to produce poly(styrene-co-N-phenyl-maleamic acid)and a first-order irreversible intrachain ring-closing reaction to form SNPMI were involved.

论文首先参考聚酰胺酸热环化反应，并通过SMA酰亚胺化产物的组成分析，确定了SMA与苯胺的热酰亚胺化反应机理为一个包含由SMA生成苯乙烯—N-苯基马来酰胺酸共聚物的二级可逆开环反应以及由SNPMA生成苯乙烯—N-苯基马来酰亚胺共聚物的一级不可逆分子内闭环反应在内的串联反应过程，其中第二步SNPMA闭环反应为控制步骤。

The company is under the jurisdiction of 843 state-run factories of Industry Corporation of weapons (the Qin chuan of the North of Xi'an now ), have cooperated with unit experts and technical staff such as Zhejiang University , Tsing-Hua University , Xi'an Communications University ,etc. for many years, in absorb , digest Company and AG reaction of Company , BBC of Germany , heat power at the technological foundation, develop , help integrated circuit control and digital control circuit brilliant floodgate in charge of the power of intermediate frequency, apply various smelting , being completely hot , quenching metal to , return bend and reaction heat field of brazing, make reaction heating technology of our company in in a leading position competence at home.

公司隶属于兵器工业总公司国营843厂（现为西安北方秦川有限公司），多年来同浙江大学、清华大学、西安交通大学等单位的专家及技术人员合作，在吸收消化德国BBC公司与AG公司的感应加热电源技术基础上，研制成全集成电路控制及数字控制线路晶闸管中频电源，应用于各种金属的熔炼、透热、淬火、弯管及感应加热钎焊领域，使我公司的感应加热技术在国内处于领先水平。

Because chemiluminescence is a rapid and sensitive method, it can be used to study other reaction, such as photochemical reaction and other chemical reaction that can produce active chemiluminescent reagent.

由于化学发光是一种快速、灵敏的检测方法，因此它在研究这些反应产生不稳定的中间体时显示了极大的优越性，并获得了其它方法所不能获得的一些结果。

The primary amine of DETA is closed by ethyl methyl ketone to reduce the reactivity of –NCO group and –NH2 group and smooth the reaction process. The mole ratio value of –NH2/-NCO should be 2.2 to make sure that –NCO group is completely closed in by –NH2 group and amine terminate compound is prepared. The reaction temperature, reaction time and the way of adding raw materials to vessel are discussed. Structure and performance of the resin are analyzed with infrared ray spectrum.

用甲乙酮封闭DETA分子中的伯胺基团，降低-NCO与-NH2的反应活性，使反应平稳进行；研究投料比和投料方式对反应的影响；为确保生成以氨基封端的聚氨酯树脂，并将游离的异氰酸酯反应完全，最佳原料投料比控制在-NH2/-NCO=2.2；确定合理的合成条件如反应温度、时间等；利用红外光谱分析端氨基聚氨酯树脂的结构与性能。

To judge t he rate control step of intrinsic kinetics of gas-solid catalytic reaction by using Langmuir 's adsorption isothermal line, the judgment of reaction course by using the common models of liquid-solid uncatalyzed reaction .

运用朗哥缪尔吸附等温线判断气固相催化反应本征动力学的速率控制步骤，利用液－固相非催化反应的常用模型确定实际反应过程类型。

8Ps for native and NaBH〓 chemically modified reaction centers, and the transfer process from H〓 to the final electron acceptor Q〓 occurs in about hundreds of picoseconds. On the other hand, the energy transfer from excited B was obviously slowed down in the pheophytin-exchanged RC. By considering the change of free energy of ion pair P〓Phe〓, it could be expected there might exist alternative pathway of charge separation and electron transfer in pigment-exchanged reaction center. In addition, the influence of acid environment on the ultrafast dynamics of reaction center was also experimentally observed, which shows an evident difference from that of in native RC, and further investigation should be carried out to elucidate the origination.

在色素置换后的反应中心中，以B为起点的能量传递较天然RC的情况明显减慢，约在450fs左右，考虑到置换后的反应中心中P的自由能有所提高以及其仍然保持的光化学活性，这一较慢的能量传递也可能预示着还存在着其它的能量传递通道；另外，还对酸性处理的反应中心中的超快光动力学过程进行了尝试性的研究，发现由于色素分子的聚集以及蛋白环境的改变，BChl分子的激发态动力学过程有着明显不同于天然反应中心的情况。

The reaction temperature had a greater effect on amino acid yield in the hydrolysate than reaction pressure and reaction time.

水解产物中不同种类氨基酸的产率随反应温度、反应压力和反应时间的变化规律各不相同。

The primary radiation reaction is marrow depression, and primary lung radiation reaction. There are 8 marrow depression cases in these groups,(degree Ⅰ: 5 cases, degree Ⅱ: 3 cases). Leukocyte and haematoblast decreased in these cases. Primary lung radiation reaction cases is 6(degree Ⅰ: 4 cases, degree II: 2 cases).

早期非小细胞肺癌的外科手术切除可以获得60%~70%的5年生存率，但是，一部分早期非小细胞肺癌患者因呼吸功能和心功能低下、糖尿病、血管系统疾病，一般状况差而不能耐受手术或术后不易康复，还有一些患者拒绝手术。

The reaction between ammonia and carbon disulfide is a parallel one. Solvent affects the reaction mechanism and reaction rate.

不同溶剂条件下产物的定量分析证实了二硫化碳和氨反应中的溶剂效应。

Furthermore, the effects of ligands, metal and reaction time on the reaction were also researched, and the process of new ligand-metal catalysis for Diels-Alder reaction was also analyzed according to Evans" square planar mode and Corey"s tetrahedral manner.

我们对影响配体对映选择性能的各种因素，如配体结构、金属离子、反应时间等进行了研究，而且根据Evans的平面四方形模式与Corey的四面体过渡态理论为新配体—金属配合物催化的该反应提出了可能的反应机理，并对产物的优势构型作了理论分析。

Hanna: That's over now, isn't it?

都结束了，对吗

You must be ill. You look so pale.

你一定是病了，你的脸色苍白。