Which explains why fillings dull with age. And the compound isn't absorbed by the body, which means it can't affect the body the way elemental mercury can.
这也解释了为什么时间久了这些填充物就显得暗淡无光，而这种化合物是无法被人体吸收的，也就意味着它不会像汞元素那样对人体造成损害。
RESULTS the overall yield was 95.4%, the title compound was characterized by IR and elemental analysis.
结果总收率达95.4%，目标化合物的结构经红外光谱和元素分析确证。
The crystal structure of the compound has been determined by elemental analysis and X-ray single-crystal diffraction.
并通过元素分析及X-射线单晶衍射法，测定了该化合物的晶体结构。
Instrumental analysis can be divided into elemental analysis and compound and molecule specific analysis.
仪器分析可分为元素分析和化合物及分子分析。
Ti -containing imidazoline model compound was prepared by reacting o-phenylene diamine with titanium tetrachloride. The compound was identified by elemental analysis, IR and MS.
苯二胺与四氯化钛反应合成聚合物的模型化合物钛杂咪唑啉。该化合物经元素分析、红外光谱、质谱测试。
The product was characterized by elemental analysis, melting point, IR and NMR spectra and was found to be in accordance with the expected compound.
它被广泛用作聚酚亚胺材料的单体，国内尚无市售，经元素分析，熔点，IR，NMR表征，表明结果与预期产物相符。合成步骤简单，原料易得。
The N-benzenesulfonyl-histidine compound is synthesized and characterized by elemental analysis, infrared and X-ray diffraction study.
合成了苯磺酰组氨酸，并进行了元素分析、红外等表征。
The structure of the target compound was confirmed by MS, 1H-NMR, IR spectra and elemental analysis.
结果通过优化条件合成了阿立哌唑，总收率40%，目标化合物的结构经元素分析、质谱、氢谱、红外光谱确证。
Compound display of Emotion is here referred to the multi-elemental sentiment structure displayed by the images in artistic creation.
情感的复合显示是指艺术创作中所表现的艺术形象呈现多元情感结构状态。
The synthetic method for 3 mercaptocoumarin is reported. The structure of this compound has been confirmed by elemental analysis, IR, 1HNMR and MS.
报道了3- 巯基香豆素的合成方法。经元素分析，红外光谱，核磁共振氢谱和质谱确证了其结构。
Results and conclusion The target compound was identified by IR, 1H-NMR, MS and elemental analysis, the overall yield is 24.9%.
结果与结论罗库溴铵的结构经红外光谱、核磁共振氢谱、质谱、元素分析确证，总收率达24.9%。
The condensation compound was synthesized by 2 butene 1, 4 diol and iso butyric aldehyde, and was characterized by elemental analysis and IR.
将异丁醛与1,4丁烯二醇缩合得到产物二氧七环，对产物进行了元素分析和IR分析。
The structure of the chelate compound was confirmed by IR spectra?UV VIS spectra?elemental and thermal analysis.
用紫外光谱、红外光谱、元素分析和热分析对配合物的组成进行了表征。
The structure of the chelate compound was confirmed by IR spectra?UV VIS spectra?elemental and thermal analysis.
用紫外光谱、红外光谱、元素分析和热分析对配合物的组成进行了表征。
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