光谱测定的

Studied are the determining trace sulfur in iron, manganese ores and in cement by using spectroscopic method of inductancecoupling plasma emission, the selection of work conditions and the accuracy of results. As shown by tests, it is reliable to use aqua regia to resolve samples.

研究了利用电感耦合等离子体发射光谱法测定铁矿、锰矿、水泥等矿产品中微量硫的溶样方法、工作条件的选择和结果的准确性。

The water-saturated and boiled specimens of China fir are hot pressed with the average compression rate of 50%. Then they are heat treated in a common oven or in a vacuum oven, with the temperatures of treatment of 140,160,180,200,220℃, respectively. Then the brightness, chromatism, infra red spectra of the specimens are measured and discussed.

为了探讨热处理过程中杉木压缩木材的材色变化规律，以及材色和木材化学主成分变化之间的关系，该研究测定了空气介质和真空中热处理杉木压缩木材(热处理温度范围140～220℃，时间范围0～36h)的明度、色差以及红外光谱。

Experiments and application situation on determination of dysprosium by fluorescence analysis and derivative spectrum analysis method are reviewed.

对近10a来的用荧光法和导数光谱法测定镝的研究及应用进行了综合报道。研究了在聚乙二醇2000 硫酸铵铝试剂双水相体系中，铝试剂作萃取剂，对镧、镨、镝的萃取行为。

The laser induced fluorescence and its derivative spectra of dysprosium europium, samarium, and terbium in the system of TFATOPO-Nongru-100 was studied and the method for the simultaneous determination of the four rare earths was developed.

我们利用自己编写的数字微分软件，研究了TFA-TOPO-农乳-100体系中Dt、Eu、Sm和Tb的激光诱导荧光及其导数荧光光谱，拟定了同时测定四个稀土元素的分析方法。

The grating spectrometer has several advantages over existing commercial products for being able to measure semi-continuous spectrum in critical hydrocarbon peak region and better signal baseline stability critical for accurate spectroscopy.

与目前的商业产品相比，该光栅光谱仪具有几个优点：能够测定临界油气峰区的半连续光谱，信号基线稳定性更好，后者对光谱的准确性非常重要。

Instrument Systems is the global technology and market leader in photometry and radiometry offering complete and superior light measurement solutions for the entire lighting industry. Headquartered in Munich, Germany, the company develops and manufactures a range of spectroradiometers based on fast CCD array spectrometers as well as high-precision single and double monochromators.

Instrument Systems 是光度测定术和辐射测量术方面的全球技术和市场领导者，为整个照明工业提供完整先进的光测量解决方案，总部座落在德国慕尼黑，司开发生产各种基于快速CCD阵列光谱仪的光谱辐射计和高精度单，双分光仪。

In this paper,the principle of a new absorbance ratio derivative method was described.The experimental methods of derivation with subtraction technique on ordinary spectrophotometer and simultaneous determination of phenol and resorcin were studied.The result is satisfying.

本文叙述了吸光度比值－导数光谱新方法的原理，研究了在普通分光光度计上用计算法完成吸光度比值导数运算、同时测定苯酚和间苯二酚含量的实验方法，取得了较为满意的结果。

Secondly, comparative experiments were carried out in different phase regions to probe the influence of pressure and the phase behavior of the mixed solvents on the tautomerism.

将紫外光谱及热力学方法相结合，测定了CO〓+乙醇、CO〓+正戊烷混合流体中EAA的异构化平衡常数，研究了超临界区、临界区和亚临界区EAA的异构化平衡常数随压力等因素的变化规律。

Fluorescence spectra were measured at consecutive time points in an emission range of 439～550 nm for every sample when a constant 390 nm excitation wavelength was used, hence, creating a three-way response data array which was then analyzed by trilinear decomposition method.

设定激发波长为390 nm，在发射波长为439～550 nm的范围内测定一段时间内连续时间点的该动力学反应中间物的荧光光谱，构建三维响应数据阵，然后运用三线性分解算法进行解析。

The results of using the inductively coupled plasma emission spectrometry and turbidimetry to determine soil available S showed extremely significant correlationship between the methods with correction coefficient being 0.867**.

采用电感耦合等离子体原子发射光谱法和BaSO4比浊法对Ca(H2PO4)2浸提的土壤有效S进行测定，二者的结果具有极显著的相关性，r值达0.867**。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。