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According to IR spectra and 1H NMR spectra, we know the reactional development and outcome' s characteristic peak .

通过各反应前后原料与生成物的IR谱图对比以及~1H NMR，明确反应进展情况和产物的各特征峰。

Methods Compounds were isolated and purified by various column chromatographic techniques and their structures were elucidated on the basis of spectral analysis (IR, ESIMS, 1HNMR, 13CNMR). The inhibitory activity against the proliferation of HL60, REH and Raji cell lines was determined by using MTT assay.

用色谱方法分离栀子中化学成分，用波谱技术(IR，ESIMS，1HNMR，13CNMR)进行结构鉴定，用四唑盐比色法测定化合物对白血病细胞（HL60人早幼粒细胞白血病、REH人急性淋巴细胞白血病、 Raji淋巴瘤）增殖的影响。

Sesbania gum supported palladium compound was synthesized with simple method and characterized by XPS,IR,TG,DTA,TEM etc.

通过较简单的方法合成了田菁胶负载钯化合物，利用XPS、IR、TG、DTA和TEM等手段对其进行了表征。

The chemistry structure and morphology of the fibers were studied by FT-IR, TGA, elemental analysis and SEM. The process and related influencing factors of the preparation of spinnable zirconium sol were studied.

用FT-IR、TGA、元素分析和SEM等分析技术表征了纤维的化学结构和形貌观察，研究了可纺性ZrO2溶胶的制备条件和影响因素。

N-substituded thioacridones with five different structures were synthesized via a route involving Ull-man reaction, cyclization, N-alkylation and sulfurization. The structures of each thioacridone were identified with IR and MS. The results from UV-spectrophotometry show that the five N-alkythioacridones all have stronger absorption in the visible light region.

采用乌尔曼反应、酸催化环化、N-烷基化和硫代化四步反应路线合成了5种不同结构的N-取代硫代吖啶酮，利用IR和MS分析手段表征了其结构，UV分光光度计的测定结果表明5种硫代吖啶酮在可见光区都有较强的吸收。

Methods The target compounds were prepared by using Pechmann reaction under catalysis by sulphamic acid and microwave irradiation. All the structures were confirmed by IR, 1H-NMR spectra.

在微波辐射和氨基磺酸的催化作用下经Pechmann反应得到相应产物，其结构经IR、1H-NMR波谱确证。

The curing reaction of hydrogenated terpinene maleic anhydridewith bisphenol A epoxy resin was investigated by FT-IR spectrum, and the curing degree, gelation time and its affecting factors were analyzed.

采用FT-IR光谱研究了氢化萜烯马来酸酐与双酚A型环氧树脂的固化反应过程，并分析了固化度、凝胶时间及其主要影响因素。

The curing reaction of hydrogenated terpinene maleic anhydride with bisphenol epoxy resin was investigated by FT-IR spectrum, and the curing degree, gelation time and its affecting factors acre analyzed.

采用FT-IR光谱研究了氢化萜烯马来酸酐与双酚A型环氧树脂的固化反应过程，并分析了固化度、凝胶时间及其主要影响因素。

A gelator (G2) synthesized from 1,2,4,5-benzene tetracarboxylic acid and 4-hydroxy pyridine at molar ratio of 1:4 was characterized by 1H-NMR and FT-IR.

采用1H-NMR和FT-IR表征了在摩尔比1：4条件下，由均苯四甲酸和对羟基吡啶合成的一种凝胶因子(G2)。

The structure of compound 10 was confirmed by 1H NMR, 13C NMR, IR, and HRMS. In conclusion, resveratrol-dehydrodimer-11,11',13,13'-tetramethyl ether was synthesized through the new method in a total yield of 48.93%.

通过1H NMR、13C NMR、IR、HRMS等测试技术确定化合物10为二聚芪类化合物-脱氢二聚白黎芦醇－11，11'，13，13'-四甲醚，总收率48.93%。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。