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1·It was identified by IR and mass spectra.

并由红外光谱和质谱确证了它的结构。

2·The EI mass spectra of 19 new substituted thiourea compounds were studied.

研究了两类19种取代硫脲类化合物的低分辨ei质谱。

3·After mass spectra identification, 10 protein spots were confirmed at last.

质谱鉴定后，10个蛋白得到确认。

4·Mass spectra of thirteen epimers of podophyllotoxin and its derivatives have been examined.

本文考察了十三个鬼桕毒及其衍生物的立体异构体的质谱性能。

5·The fast atom bombardment (FAB) mass spectra of free bile acids and their succinyl derivatives are described.

本文研究游离胆汁酸及其丁二酸衍生物的快速原子轰击（FAB）质谱。

6·The hydrogen, helium, nitrogen and argon beams thus produced were analyzed and their mass spectra were measured.

并对氢、氦、氮、氩等气体产生的离子束进行了磁分析，测定了离子束的质谱。

7·Classification of mass spectra of toxic compounds is based on the numerical features derived from spectral data.

有毒化合物质谱分类是以光谱数据的数值特性为基础的。

8·Therefore, mass spectra gained by these three ionization modes are satisfactorily used to analyse liquid crystals.

三种质谱并用，能有效地测试液晶化合物。

9·The reaction conditions were studied and the structure was characterized by HNMR and mass spectra. The yield was 80%.

介绍了读物质的分离纯化方法，并用HNMR及质谱对其进行了结构表征。

10·The MS fragmentation law of color couplers have been established by analyzing the mass spectra of such compounds and a…

通过谱图解析找出了成色剂化合物的质谱碎裂规律；归纳出了利用质谱分析成色剂结构的方法。