查询词典 planar

In this work, three certified milk powder materials with different PCDD/Fs levels were Soxhlet-extracted and then cleaned up using Power-Prep system automatically. PCDD/Fs and planar PCBs were determined using isotope dilution and high resolution gas chromatography-high resolution mass spectrometry.

自动样品前处理在乳品中二恶英和共平面多氯联苯同时测定中的应用张磊，李敬光，吴永宁，赵云峰(中国疾病预防控制中心营养与食品安全所，北京 100050)摘要：采用索氏提取及自动净化处理系统对乳品进行提取和净化，在高分辨气相色谱-高分辨双聚焦质谱仪上进行定性和定量检测。

The location of the internal corners of a planar checkerboard pattern image is very important to camera calibration.

摘要棋盘格模板角点的定位是摄像机定标过程中的重要环节，定位的正确与否直接关系到定标的成败。

In this reaction the matching of planar chirality and central chirality is also important.

在该反应中平面手性和中心手性的匹配也是重要的，平面手性仍然决定了产物的绝对构型。

It seems that the planar chirality is decisive in controlling the absolute configuration of product in the model reaction.

对烯丙基钯络合物的研究表明反应的对映选择性是由动力学和热力学共同控制的。

When the ligand 52 and 54 with only planar chirality were used the high enantioselectivity was obtained.

我们对配体平面手性作用的研究表明平面手性可以独立地进行不对称诱导，最高给出93％的ee值。

In this thesis, it was intended to investigate the role of planar chirality, and to design and synthesize novel ligands.

在前项工作基础上合成一类有效的手性二茂铁配体，拓宽烯丙基化反应的底物或反应类型，为解决这些问题做出我们的一些贡献。

In this paper we discuss the circular chromatic number of planar graphs, Mycielski graphs and distance graphs.

本文研究了平面图、Mycielski图和距离图这三类特殊图的圈色数。

In this paper, we first study the game chromatic number on graphs, and then we give some examples for the lower bound about the game chromatic number of the planar graphs.

首先全面分析了图的点对策着色问题，对某些定理的下界，给出了具体的例子。

Specially,we construct some new kinds of planar graphs with circular chromatic number 3 or 4 based on the results which have been surveyed in part two.

其中第二部分在总结平面图的圈色数已有结论的基础上，还构造了一些新的圈色数为3或4的平面图。

Part two, three and four have made conclusions and evolutions about the circular chromatic number of planar graphs, Mycielski graphs and distance graphs.

第二、三、四部分分别总结了关于平面图、Mycielski图和距离图的圈色数的一些结论和这些问题的进展情况。

John Robbins lives with his family in Santa Cruz, California.

约翰罗宾和家人居住在加利福尼亚州的圣克鲁斯县。

The international background is mainly the economic ties among different nations tented to be widen and deepen at the peace and development times.

国际背景主要是和平与发展时代条件下的世界各国经济贸易联系的日益加深。