查询词典 radio-frequency spectrum

The invention chooses single or double color fixing wavelength to respectively project single spectrum, and the plurality of LEDs stable spectrum property project a constant spectrum with the range between 380nm-780nm, further the invention is low in energy-consumption, small in volume, environment-friendly, fast in response speed, long in useful life, fine in stability, and high in accuracy, thereby the invention is a product to take place tungsten halide lamp illuminant.

本发明选用单一或双色固定波长、分别发射出单色光、以及光谱性能稳定的多个LED组合发出光谱范围在380nm～780nm之间连续光谱，能耗低、体积小、环保、响应速度快、寿命长、稳定性好、精密度高，是卤钨灯光源更新换代产品。

Based on the results of Fisher linear discrimination analysis,the first principal component score spectrum of three-dimensional fluorescence spectrum is chosen as the identification characteristic spectrum for Bacillariophyta and Pyrrophyta,and the phytopla...

根据Fisher判别分析结果，选用三维荧光光谱的第一主成分得分谱作为硅藻和甲藻的识别特征谱，建立了浮游植物荧光特征谱库。

Based on the results of Fisher linear discrimination analysis,the first principal component score spectrum of three-dimensional fluorescence spectrum is chosen as the identification characteristic spectrum for Bacillariophyta and Pyrrophyta,and the phytopla.

将浮游植物三维荧光光谱与主成分分析方法相结合，针对我国东海常见的12种藻建立了硅藻和甲藻的识别测定技术。

Based on the results of Fisher linear discrimination analysis,the first principal component score spectrum of three-dimensional fluorescence spectrum is chosen as the identification characteristic spectrum for Bacillariophyta and Pyrrophyta,and the phytopla.

将浮游植物三维荧光光谱。主成分分析方法相结合，针对我国东海常见的12种藻建立了硅藻和甲藻的识别测定技术。

The databases of NIRDRS for Hypericum、 Eucalyptus globules and broussonetia papyrifera were established within suitable spectral ranges with three kinds of data block(original spectrum, first-order derivative spectrum and second-order derivative spectrum) to discriminate unknown samples.

分别用三种数据块(原谱、一阶导数光谱、二阶导数光谱)在不同的谱区范围建立了金丝桃、蓝桉、楮实子3种中药材的NIRDRS指纹图谱库，对未知样品进行鉴别。

The characteristic of this method is to use two reflective spectra: one is the spectrum of cholesteric LC, the other is the spectrum of reflector compensating each other to broaden the spectrum of the display.

这个方法的特性是用胆固醇液晶和下板反射板的两个反射频谱叠加在一起来加大整个胆固醇液晶显示器的反射频谱。

The free radical scavenging properties of six Aloe species are to be investigated in some modified chemical system. The antioxidant was purified by silica column and thin layer chromatography and analyzed by HPLC. A fraction was purified from A. brevifolia Mill showed the most effective scavenging activities on 〓 and ·OH (66. 01% and 38. 98% respectively). With the analysis of IR spectrum, UV spectrum and mass spectrum, the structure of FA was identifed as 8-C-D-glucopyranosyl-2- [2-hydroxy] propyl-5-methyl-7-hydroxychromone. Its scavenging activity on free radicals is higher than that of aloe-emodin. Its antioxidant activity may be due to the phenoxyl on glucosyl chromone which can be react with free radicals and form relatively stable free radicals.

本研究利用分别产生超氧阴离子自由基和羟自由基的化学模型体系研究比较了不同品种芦荟提取物的清除活性氧自由基的抗氧化作用，进一步利用硅胶柱结合薄层层析法和反相高压液相色谱法，从短叶芦荟叶子中首次分离了具有较强自由基清除能力（超氧阴离子自由基和羟自由基清除率分别为66.01％和38.98％）的成分FA，利用红外光谱、紫外光谱和质谱等仪器分析结果推断出该活性成分的分子结构为8-C-吡喃葡萄糖-2-[2-羟基]-丙基-5-甲基-7-羟基对氧萘酮，它的自由基清除能力高于芦荟大黄素，是一种天然抗氧化剂。

In order to clarify the rules of POD isoenzyme in the hazelnut, identify their blood relations between female, male and filial generations and select the superior parents for cross-breeding, we have studied the characteristics of peroxidase isoenzyme which are distributed in the 34 hazelnut varieties or lines by polyarclamide gel electrophoresis, The results showed that:POD isoenzymes of Corylus heterophylla Fisch, Corylus avellana L, and the hybrid of Corylus heterophylla Fisch × Corylus avellana L had obvious difference; some hybrids had lost P10 spectrum band of parents; the enzyme spectrum of 32 hybrid hazelnuts produced 'new hybrid spectrum bands'that could be considered as a mean to identify hybrids.

为了阐明过氧化物同工酶在榛品种中的分布规律，探讨平榛、欧榛及其杂种榛之间的亲缘关系，选育优势杂交亲本，本试验采用聚丙烯酰胺凝胶垂直电泳，研究了34个榛品种成熟叶过氧化物酶同工酶酶谱特征，结果表明：平榛、欧榛及其平欧杂种榛品种间酶谱具有较大差异；有的杂种品种遗失了父母本共有谱带P10；32个平欧杂种榛品种出现了双亲所不具有的新酶带，可作为鉴别杂种的一条途径。

C the preparation of a 11 representation of the Ming and Qing Dynasties internal medicine doctors clinical spectrum of disease syndromes.In the database based on the medical home for each of the respective clinical disease syndromes information see separate statistics and analysis, preparation of the 11 Doctors of the "diseases of internal medicine Medical Syndromes score,""Medical exopathic disease syndrome spectrum of diseases","Miscellaneous Diseases Medical syndrome spectrum of diseases," extracted from clinical medicine to witness that a higher proportion of the diseases and syndromes.

四、编制出明清时期11位代表性医家内科方药性质统计表在数据库基础上，分别就每个医家内科医案所用方药的寒、温、平属性作分类统计和分析，编制出11位医家的&内科医案方药性质统计总表&、&外感病医案方药性质统计表&、&杂病医案方药性质统计表&，即从方药和疗效角度为研判疾病证候的性质提供佐证，同时也为了解各临床医家学术思想及相互间的差异提供量化依据。

In the meanwhile, we summarized the inspective methods and principles of the DLC: N films such as Raman spectrum, X-ray photoelectron spectrum, infrared absorption spectrum, atomic force microscope, scanning electron microscope.

第三章介绍了射频磁控溅射方法制备薄膜的步骤及设备操作的步骤，并制备了DLC薄膜及DLC：N薄膜，对其成分和结构进行了对比。

The use of the web to spread fears that flicking the switch on the LHC could create a Black Hole that could swallow up the Earth particularly concerned him, he said.

他说，使用互联网散布恐慌说启动LHC会生成一个可能吞噬地球的黑洞的做法让他感到忧虑。

Not a single word have I written down.

我一个字也没有写下来。