查询词典 criterion

Based on the criterion of reliability of paleomagnetic data, we report the paleomagnetic data of Tarim, which was our achievement in past 10 years. Combined with the paleomagnetic results of other researchers, an integrated paleomagnetic data of Tarim, since Phanerozoic, is published here.

本文依据古地磁数据可靠性判别国际公认的一些基本原则，积集作者近年来在对塔里木盆地研究中获得的古地磁新成果，并结合其他学者发表的古地磁数据，编制了塔里木盆地显生宙以来的古地磁综合数据表。

The stability of the helical equilibrium is analyzed with phase plane method, and an analytical criterion of stability is revealed.

用相平面法分析螺旋线平衡的稳定性，导出解析形式的稳定性条件。

This criterion refers to the ability to use a range of phonological features consistently and accurately to convey meaning.

这个标准是指可以使用语音功能的范围一致，正确表达的意思。

On the basis of ultraviolet standard detector in National Institute of Standard Technology, the absolute criterion was transferred to the responsivity unknown ultraviolet silicon detector, ultraviolet multiplier phototube and the ultraviolet solar blind photomultiplier.

以NIST(美国国家标准技术研究院)紫外标准探测器为基准，在200~400 nm波段对响应度未知的紫外硅探测器，紫外增强型光电倍增管和日盲型紫外光电倍增管进行了绝对标准的传递和光谱响应度、量子效率的标定，并在350 nm对紫外硅探测器的空间均匀性进行了标定。

Holds that the air volume under the wet cooling condition should be taken as an assessment criterion in stead of that when dry cooling, that the fin pitch of the coil pipe should be optimised to keep proper cooling capacity, and that the number of water passages should be doubled to reduce the resistance within the limits stipulated in the standard and to improve the heat transfer conditions.

认为应以湿工况风量作为对风机盘管机组的考核标准，应合理确定盘管肋片的片间距以保证表冷器的供冷量，应改进水路结构，降低水阻力。

However, its much harder to do the similar research under the pitman criterion.

本文正是在Pitman准则下，讨论了最有代表性的统一有偏估计以及约束统一有偏估计的优良性，给出了Pitman意义下各种有偏估计优于传统最小二乘估计的充分条件。

First, based on the criterion of Delaunay triangulation for the plane scattered points set, the article proposes the general triangulation for arbitrary scattered points in plane domain.

基于平面区域内散乱点的Delaunay三角剖分准则，本文提出一种适用于平面区域内任意散乱点的通用三角化算法。

In this chapter, three kinds of target recognition methods are performed, which are:①Target recognition method based on the description of polarization parameter plane. The echo polarization states of target are projected onto the polarization state plane described by the ellipticity ε and the tilt angle τ of the polarization ellipse, the change of parameter following ferquency becomes the chart. According to the changing trait of the chart, the multidimensional polarization feature space of target has been contructed. Furthermore, a series of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.②Target recognition method based on the description of Poincare polarization sphere. The echo polarization states of target expressed by Stokes vector are projected onto the Poincare polarization sphere. The conception of polarization ferquency stability, which is used in describing the dynamic distribution characteristics of the target echo polarization states on Poincare polarization sphere, has been defined. A group of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.③Target recognition method based on the description of frequency sensitivity. In accordance with the conception of the polarization state distance defined on Poincare polarization sphere, the frequency sensibility of the physical structure property of target has been investigated, the frequency distribution feature curves in PSD domain are obtained, and targets'features are extracted by means of the curve-fitting method with Least Square Criterion.

这章具体研究了基于三种极化散射特性描述的相应的目标识别方法：①基于极化参数平面描述的目标识别方法，将目标回波极化状态投影到以极化椭圆参数，即椭圆率角ε和倾角τ表征的极化状态平面上，参数随观测频率的变化就形成了图，根据图的变化特点构造了目标的多维极化特征空间，并提取了不敏感目标姿态变化的极化特征参数组来设计目标的识别器结构；②基于Poincare极化球面描述的目标识别方法，采用Stokes矢量表征目标回波的极化状态，并将其投影到描述极化状态的Poincare极化球面上，定义了极化频率稳定度的概念用以刻画目标回波极化状态在Poincare极化球面上的动态分布信息，提取了准方位不变性的目标极化特征，最后设计了目标的识别器结构；③基于频率敏感性描述的目标识别方法，通过在Poincare极化球面上所定义的极化状态距离的概念，研究的是复杂目标物理结构特性对探测信号频率的敏感程度问题，获得了在极化状态距离下的频率分布特性曲线，采用最小二乘估计曲线拟合方法，它既用于极化特征的降维，同时又直接将拟合参数作为目标的分类特征。

Objective To study the application value of the small opacity profusion in pneumoconiosis diagnosis criterion.

目的探讨尘肺诊断标准中小阴影密集度的应用价值。

The real yield criterion under the condition of consideration of poisson ratio or different properties of tension and compression is discussed.

分别探讨了在考虑泊松比μ的影响和材料拉压强度不相等的条件下的实际屈服准则。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。