查询词典 trace element

Based on the inhibitory effect of trace Ti on the oxidation of fuchsin acid by potassium bromate,a new kinetic spectrophotometric method for the determination of trace Ti has been developed.

利用Ti对溴酸钾氧化酸性品红的抑制作用，建立了动力学光度法测定痕量Ti的新方法。

You can trace the outlines of such patterns, you know how to move your head to get a better view, and you know when you have moved it too far to see the whole keyboard. You can obscure any feature of the keyboard by holding your finger at an appropriate location between it and your eye. And instead of describing the relation between the Intel logo and the 'P' key, you can use your finger to trace a connecting path.

你能循迹这样的样式，知道如何移动你的头获得更好的视角，你知道当你移动足够员能够看到全部键盘的时候，你能在它和你的眼睛之间，用手指分不清任何键盘的特征，取代在'图标'和'P键'之间关系的描述，你能用你的手指循迹一个相关路径。

With excellent response characteristics, high detection sensitivity and low operational cost, differential optical absorption spectroscopy is a powerful tool to trace concentration variation of trace HCHO.

差分吸收光谱技术由于时间分辨率高、高灵敏度和操作费用低等特点非常适合对大气中痕量气体HCHO进行实时追踪。

As one of its applications, cress trace-based fast fractal algorithm is presented, where the cross trace is a newly-defined feature of an image block.

作为它的应用，本文定义图像块的新特征-叉迹，然后提出一个基於叉迹的快速分形算法。

When propagating light\|ray passes through two fixed points in the gradient index mediums and a cuspidal variable\|point （at this point the trace equation of propagating light\|ray is non\|differentiable） at the borderline of two different GRIN mediums, the mathematical relationship, which the trace equation of propagating light\|ray and borderline equation of two different GRIN mediums should satisfy, is derived by the Fermat's principle and calculus of variation.

当光线通过梯度折射率介质中两个固定点和两个GRIN介质界线上的可动尖点（光线轨迹方程的不可微点）时，由费马原理和变分法运算推得传输光线的轨迹方程与两种不同GRIN介质的界线方程应满足的微分关系式。

Using this system can determinate exactly trace tin and trace germanium simultaneous and eliminated the disturbing of theirs each other.

在该体系下，可以比较准确的测定出同时存在于溶液中的微量锡与微量锗的含量，消除了两者之间的相互干扰。

The idea that experience leaves some trace in the brain goes back at least to Plato's Theaetetus metaphor of a stamp on wax, and in 1904 the German scholar Richard Semon gave that ghostly trace a name: the engram.

其实，有关体验会给大脑留下某些痕迹的想法，最早可以追溯到柏拉图有关蜡上印记的比喻中，而到了1904年，德国学者塞蒙把这种精神性的痕迹命名为：记忆印迹。

You very eugenic awareness should really fill in advance, because any trace elements are not able to fill the entry into force of a body will take some time to accumulate, especially the Chinese people from the dietary intake of trace elements is low.

你很有优生意识，确实应该提前补，因为任何微量元素都不是一补就能生效的，人体需要一段时间来进行积累，特别是中国人从膳食中摄取微量元素的比例很低。

A method for determining trace Cu is described based on the catalytic effect of trace copper on the decolorizing oxidation reaction of acid fuchsin by potassium periodate in the presence of a,a'-dipyridyl.

本文研究了在α，α′-联吡啶存在下，铜离子催化高碘酸钾氧化酸性品红褪色的新指示反应及动力学条件，建立了催化光度法测定痕量铜的方法。

The representation of sequences is very helpful for the research of their linear complexity,so this paper we first research trace representation of periodic sequences,and the trace representation of a New Generalized Cyclotomic Sequence of order two of length pq is given,then for 2~mp~n period binary sequences,where p is an odd prime and 2 is a primitive root modulo p~2,we present a relation-ship between the linear complexity and the minimum value k for which the k-error linear complexity is strictly less than the linear complexity and have the upper bound and lower bound of the value k, finally we discuss the k-error linear complexity of legendre sequences,also have the upper bound and lower bound of the value k,and discusses the situation where the linear complexity drop again for some Legendre sequences.

序列的表达形式对于其线性复杂度的研究是十分有帮助的，本文我们首先研究的是周期序列的迹表示，给出了2阶pq长度的扩展分圆序列的迹表示，然后讨论了周期为2~mp~n(m≥2)序列的线性复杂度与使得线性复杂度变小的最小的k值的关系，给出了k值的上界和下界，这里p为奇素数，2是模p~2的本原根，并通过例子讨论了其线性复杂度的稳定性，最后对Legendre序列k-错线性复杂度进行了分析，也给出了k值的上界和下界，并对某些Legendre序列讨论了线性复杂度再次下降的情况。

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。