查询词典 spectrum analysis

Currently, Response Spectrum Analysis is the most popular method of dynamic response analysis.

反应谱法时下仍是结构动力分析中应用最广泛的分析方法。

Cyclostratigraphy was born in 1980s as a subdiscipline of stratigraphy. Based on the Milankovitch theory, outcrop sections and cores are analyzed with methods such as geochemistry, spectrum analysis, and time-sequence analysis to study the complex responses of orbital forcing to sedimentary records.

旋回地层学作为一门独立的地层分支学科诞生于20世纪80年代，它以米兰科维奇天文轨道旋回为理论基础，以露头剖面、岩心等为研究对象，应用地球化学、光谱分析和时间序列分析等方法，研究天文轨道参数周期性变化在地层记录中的沉积响应。

Through systematic field survey, sample collection, indoor ICP-MS analysis and SEM energy spectrum analysis, the authors have reached the conclusion that along the Bangong Co-Nujiang metallogenic belt bismuth content of single samples in 12 ore deposits or ore spots can meet the requirement of the cut-off grade, and that in 9 ore deposits or ore spots can meet the requirement of the industrial grade.

本文通过系统的野外调查与样品采集、室内ICP-MS与扫描电镜及电镜能谱方法分析，确定班公湖-怒江成矿带12个矿床单件样品铋含量达到边界品位的要求， 9个矿床单件样品达到工业品位的要求，最高达到9575×10？

Firstly, based on the structure of the vibration characteristics, the response spectrum analysis method is used to study the seismic response of the structure with the two-dimensional and three-dimensional seismic input and vertical seismic analysis of the bridge structure are investigated.

首先，基于结构的自振特性，分别在二维和三维地震动输入下，采用反应谱分析方法，研究结构的地震响应特性，分析竖向地震力对桥梁结构反应的影响。

Reseach of solution chemistry agent, differential thermal analysis and infrared optical spectrum analysis showed mechanism of starch xanthate in watewater treatment.

通过溶液的化学计算、差热分析和红外光谱分析，得出了淀粉黄原酸酯用于废水处理的作用机理。

C. Smith. 7 compounds were separated and purified from the Illicium wardii A. C. Smith fruits selected in Gaoli Gongshan in Nujiang area of Yunnan province, their chemical structures were confirmed by means of physical and chemical properties analysis and spectrum analysis.

方法］通过对来自于云南怒江高黎贡山八角果实进行分离纯化，得到了7个化合物，并采用理化性质分析和光谱分析等手段确定其化学结构。

Then mensurate their physical property and do elemental analysis ,infrared spectrum analysis to them .

依次测定了它们的物理性质，元素分析及红外光谱数据，并通过波谱数据表征了它们各自的构象，证实其确为目标产物，从而验证了此合成路线的可行性和可靠性。

In the thesis, By using x-ray diffraction, energy spectrum analysis, metallographical analysis and scanning electron microscopy and opitimzing technology, the effects of the element Ga was researched and discussed in the magnetic performance and microstructure of Sintered Nd15Fe78B7+Ga permanent magnets made by powder metallurgy.

本文采用粉末冶金方法，通过x射线衍射、能谱分析、金相分析和电子扫描等一系列的检测与分析方法，优化工艺，研究并讨论了添加Ga元素对烧结Nd_(15)Fe_(78)B_7系永磁体磁性能和微观结构的影响。

Carbon source,nitrogen source,cultivation temperature,the initial pH of the culture medium,the speed of shaker are involved in the experiments,and the evaluation of retting is based on the residual gum content in retted flax roving.Then flax roving treated under the optimal conditions is compared with untreated roving in ingredient analysis,scanning electron microscope and infrared spectrum analysis.The result shows that the microbe treat...

用筛选出的一种真菌对亚麻粗纱生物处理的工艺进行了探讨，以残胶率作为评定标准，研究了碳源、氮源、温度、pH值、摇床转速对亚麻粗纱生物处理效果的影响，并在最佳工艺下对亚麻粗纱再处理，对处理后的粗纱进行成分分析、扫描电镜、红外光谱等测试，结果表明：亚麻粗纱的生物处理是可行的。

In order to avoid or reduce arc fault hazard,the authors established an arc fault detecting test system with the method of power spectral analysis to study the early acoustic characteristics of fault arc ,and extracted the sound signature of early fault arc by using power spectrum analysis.

为了避免或减少故障电弧的危害，笔者建立了故障电弧探测试验系统，采用功率谱分析的方法对故障电弧的早期弧声特性进行了试验研究，提取出故障电弧的早期弧声特征信息。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。