查询词典 spectral analysis

Their structures were confirmed by elemental analysis, 1H NMR, and IR spectral data. The preliminary bioassay results showed that α-phenyl-sul-fonylcyclododecanone oxime 2,4-dichlorophenoxy acetate (8p) had inhibition ratio 100% and 80.07% against Digitaria sanguinalis Scop., and 100% and 88.70% against Abutilon theophrasti Medic. at concentrations of 100 and 1 mg/L.

初步生物活性测定结果显示，部分化合物具有一定的除草活性，如α-苯磺酰基环十二酮肟-2，4-二氯苯氧乙酸酯(8p)在浓度为100和1 mg/L时对马唐的抑制率分别为100%和80.07%；对苘麻的抑制率分别为100%和88.70%。

The oily substances and the acidic components were characterized using elementary analysis, IR spectral analyses and acidimetry.

采用石油醚和三氯甲烷分级萃取孤岛油田含聚污水中的油分，得到两个不同极性的组分F1和F2；用碱抽提法从酸值较高的F2组分中分离酸性物质并将其甲酯化，通过柱层析法将甲酯化物分成Ⅰ、Ⅱ和Ⅲ三个甲酯组分。

As important ways for numerical solutions of partial differential equations, spectral methods have been developed rapidly in the past several decades. They not only have been widely applied to numerical simulations in various fields such as physics, mechanics, aerology, oceanics etc, and their theories of numerical analysis also tend to perfect.

作为数值求解的一种手段，谱方法在近几十年得到了蓬勃的发展，它不仅被广泛运用于物理、力学、大气、海洋等领域的数值计算，而且它的数值分析理论也不断地趋于完善。

Use of graphics power spectral analysis.

使用VC++实现，对图形做频谱分析。

In order to investigate the mechanism of arc light sensing for welding behavior accurately, systematic spectral analysis of GMA and GTA was made.

使用自行建立的计算机化光谱分析系统，对实际焊接条件下的电弧进行了整体和局部的分析。

An applied basic theory for arc light sensing was established through spectral analysis and derivation of radiation theory.

在弧焊过程中，许多实际问题阻碍了传统焊接传感技术在反馈控制中的成功应用。

The spectral analysis focused on arc light sensing for the first time.

这部分光谱分析工作是首次针对弧光传感而进行的，所获结果填补了弧光传感应用基础理论的空白，而且也充实了电弧物理在弧光领域的不足。

Based on the analysis mentioned above, arc light sensing was introduced into practical welding process systematically and was improved with spectral method for the first time.

在GTAW过程中，建立了弧光信号同弧长的对应关系。

In this paper, based on the effect of both of them in latitude and time observation, the data of observation of a Danjon astrolabe at the Shanghai Observatory from 1960 to 1978 were analysed with the method of maximum entropy spectral analysis.

本文根据二者对纬度和时间观测结果的影响，用最大熵功率谱方法方析了上海天文台丹容等高仪1960～1978年的观测资料，得到了空间自由章动在纬度和时间资料中引起的周期、振幅分别为P2，1=208平太阳日、A1=0。

The result of IR spectral analysis indicated that the categories of radicals found in cell walls after either ultrasonic method or cell autolysis are almost the same.

红外光谱分析结果表明，与Nocardia原菌相比，超声波法破碎和自溶法破碎后制得的Nocardia细胞壁所含有的基团类别基本相同。

I want to be a big fish in a small pond.

我要做一条在小池塘里的大鱼。

While the software functioned well, we did not feel the same about their customer support!

虽然该软件运行良好，我们没有同样的感觉他们的客户支持！