查询词典 sample

Methods: Sample preparation with acetic ether-QuEChERS, and then five kinds of pesticide residues in celery cabbage were determined by gas chromatography with electron detector.

采用乙酸乙酯－QuEChERS法进行样品前处理，结合气相色谱－电子捕获检测器对大白菜中5种常见拟除虫菊酯农药残留进行检测分析。

First, in this system, advanced 16-bit microprocessor 80C196MC is used to sample signals from industry cense. This makes it impossible to have a higher speed in data processing. Second, a kind of Field Bus-CAN is applying to build whole system into a more reliable, advanced real-time control network.

其次，通过现场总线技术将整个系统组成网络，实现了节点之间数据共享，并且整个监控系统更加稳定可靠，现场控制性能更为出色。

Central Limit Theorem -- States that distribution of sample means tends towards an approximate normal distribution.

中心极限定理--样本的均值近似服从正态分布。如果样本容量较大，那么其均值的分布越近似于正态分布。

The paper chooses twenty-five key meadow sample plots in the Loess Plateau, then discusses the estimation model and estimation method of vegetation coverage by the pictures taken by the digital camera, and puts forward the effective solution for edge distortion problem caused by the central projection and vegetation information recognition problem.

该文选择黄土高原退耕还林还草区野外测量的25个典型样方，探讨了数码照相法估算植被盖度的模型和方法，提出了中心投影引起的边缘畸变问题和植被信息识别问题的有效解决方案。

This is a blood sample which when we get back to the lab we'll centrifuge and get the plasma, she says.

这是一个血液样本，当我们重新回到实验室里，我们将离心机和获得等离子体，她说。

Cepheid's easy-to-use systems integrate a number of complicated and time-intensive steps, including sample preparation, DNA amplification and detection, which enable the analysis of complex biological samples in its proprietary test cartridges.

易用的系统整合了一系列复杂和耗时的步骤，包括样品制备、DNA扩增及检测，这样就可以在公司专有的监测盒中分析复杂的生物样品。

Chapter 2, it introduces the basic cerebration and methods of mathematics, listing the gradually used basic cerebration and methods in secondary-school teaching, and then sorts them out, by simply explaining the sample problems, to make the readers especially the worker including me understand the theory generally.

第二章介绍了数学基本思想方法，列举了中学数学教学中常用的数学基本思想方法，并对此进行了分类，又通过例题加以简单地讲解，使读者，特别是包括作者本人在内的从事数学教育的工作者对中学数学基本思想方法有了全面的认识。

The method was validated and applied to qualitative analysis of NT and NT8-13 in human cerebrospinal fluid sample.

同时还将本章所建立的方法用于人体脑脊液样品中的NT8-13和NT含量的测定。

It is found by X-ray diffraction that the solution of Sm2O3 and Gd2O3 in ceria for the samples sintered in the range of 1 400─1 550 ℃ is better, but for the sample sintered at 1600 ℃, a new phase is formed with the reduction of lattice constants.

X射线衍射分析发现：对1 4001 550 ℃烧结的样品，Sm2O3和Gd2O3固溶较好﹔但对1 600 ℃烧结的样品，有新相生成，同时晶格常数减小。

The sample with 5% ceria sintered at 925℃ exhibits high relative density (99.1%). The dielectric constant and loss as well as thermal expansion coefficient are 6.7, 0.09% and 3.42×10^(-6)K^(-1), respectively.

添加5%氧化铈的样品在925℃烧结后，其相对密度达99.1%，其介电常数、介电损耗和热膨胀系数分别为6.7、0.09%和3.42×10^(-6)K^(-1)。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。