查询词典 trace elements

This device is characterised by that its beam-splitter unit is the above described one, the first focusing elements (24) are placed at two opposite sides as seen from the direction of the beam arriving to the semitransparent reflective surfaces of the optical beam-splitter unit (22) i.e. from the receiving direction (5) and the common optical axis (23) of the first focusing elements (24) is at right angles to the receiving direction; outside the first focusing elements (24) on both sides a mirror is placed in front of each eye, and the semitransparent reflective surfaces of these mirrors enclose an angle delta 45 DEG +-15 DEG with the above mentioned optical axis (23), and the intersection line of these reflective surfaces is parallel to the mirror crossing intersection line (4) of the semitransparent reflective surfaces.

该双目图像显示装置的特征是其光学分束器单元是所述的单元，从到达光学分束器单元(22)的半透明反射面的光束方向看，即从接收方向(5)看，第一调焦元件(24)放置在相对的两侧，并且第一调焦元件(24)的共同光轴(23)垂直于接收方向；在位于两侧的第一调焦元件(24)的外面反射镜放置在每一只眼睛的前面，并且这些反射镜的半透明反射面与所述共同的光轴(23)围成夹角δ45°±15°，并且这些反射面的交线平行于半透明反射面的交叉反射镜交线(4)。

Tropical elements have 76 species, approximating to 39.58% of the whole liverwort flora, East Asiatic elements (including Himalaya-Japan, Sino-Himalaya and Sino-Japan) with 75 species, approximating to 39.06%. The proportion of Temperate elements are low, approximating to 10.94% of the whole liverwort flora.

大围山苔类植物区系的主要特点是种类丰富，可以划分为11种地理成分，其中热带成分比例最大(39.58％)，东亚成分略低于热带成分(39.06％)，温带成分较少(10.94％)。

The results indicated that the proportions of elements endemic to China and the temperate elements increased with the increase in elevation and the shares of elements of tropical and subtropical showed a monotone decreasing pattern.

在整个海拔梯度上，地中海、西亚至中亚分布，中亚分布成分所占比重均很小，甚至未发现，这可能与研究区域内湿润的气候或生境有关。

The complementary and reciprocal judgment elements in the form of interval numbers, the complementary or reciprocal judgment elements in the form of triangular fuzzy numbers are made uniform into the complementary and reciprocal judgment elements of numerical values by using C-OWA operator,C-OWG operator and the.

定义一类新型混合判断矩阵，利用C-OWA算子、C-OWG算子及三角模糊数期望值公式分别将区间数互补、区间数互反和三角互补互判断元素一致化为数值型互补与互反判断元素。

By means of estimates for three-dimensional discrete derivative Green's function , the theory of the interpolation operator of projection type and the technique of cancellation of elements, for several usual elements in the three-dimensional setting, including rectangular parallelepiped elements, tetrahedr.

借助三维离散导数Green函数的估计，投影型插值算子理论和单元合并技术，本文详细讨论了几种常用三维单元(包括长方体元，四面体元和三棱柱元)的有限元解梯度的最大模超逼近，均获得了高精度的超逼近结果。

These elements are referred to as picture elements, image elements, pels, and pixels.

这些元素称为图像元素、画面元素或像素。

The geochemical field of elements advanced in the recent years unraveled both the concentration_ dispersion trends of elements in endogenic process corresponding to the periodic law, and the spatial distribution patterns of elements in the Earth.

元素地球化学场揭示了与门捷列夫周期律相适应的、素在内生过程中的聚散趋势和空间分布规律。

First of all the differences between photoelectric current / voltage transformer elements in HV and UHV switchgear assembly and independent electric device of conventional open porcelain knob photoelectric current / voltage transformer are described in this paper,then the photoelectric current / voltage transformer elements in HV and UHV switchgear assembly are classified,and the working principle and technical performances of photoelectric current / voltage transformer elements in 500 kV switchgear assembly abroad are introduced in detail.

首先论述了高压和超高压组合电器中光电式电流/电压互感器元件和常规敞开瓷柱式光电电流/电压互感器独立电气设备在概念上的区别，然后对组合电器中光电式电流/电压互感器元件进行了分类。并详细介绍了国外550kV 超高压组合电器中光电式电流/电压互感器元件的工作原理及技术特性。对 ABB 公司、阿尔斯通公司、三菱公司、西门子公司等生产的245～550kV 户外超高压新型组合电器进行了较详尽地介绍和分析，主要是：①基本结构及特点；②主要技术参数

The line pencil equation for geometric elements in En is studied. From the direction number in the equation, the relative position between the elements and the projective space anp that between any two elements are analyzed.

本文系统地研究了E~n中几何元素的线束方程，由方程中的方向数分析几何元素对投影空间的相对位置和几何元素间的相对位置，规律性强。

For accuracy and computation cost, the nonlinear finite element structural dynamics model of the naval gun is created with different elements such as solid elements, shell elements and the nonlinear components are considered, especially the large displacement slide and the nonlinear spring connection between gun tube and cradle rail.

在建立有限元模型时，考虑了火炮各部件间复杂连接，尤其是身管与摇架间的大位移滑动接触的非线性问题。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。