查询词典 positron

This damage can be measured by using brain scans such as this positron emission tomography scanner.

这种大脑的损伤可以用脑部扫描测量，就像这种正子断层扫描机。

Current situation on positron emmision tomography, sentinel node, and radioimmunotherapy has been demonstrated in this paper.

本文就正电子发射型计算机断层仪、前哨淋巴结技术以及以辅助治疗为目的的放射免疫治疗的发展现状及前景进行论述。

Signed rank sum test was applied. 18F-FDG PET imaging showed significant difference P ＜ 0.005）. Twenty cases showed low brain glucose metabolism, 11 were diffuse low metabolism loci, 9 were unilateral low metabolism loci, 2 were normal.

随着正电子发射计算机断层扫描（positron emission tomography， PET）的问世，18F-FDG PET脑代谢显像不仅能显示脑结构异常，并且能显示脑细胞葡萄糖代谢变化。

Positron Lifetime experiments were performed in plastically deformed and undeformed Zn-doped p-type GaAs to investigate deformation-induced point defects.

在n型和SI型InP中，V〓和V〓均捕获正电子，但在p型InP中，正电子只探测到了V〓。

In this new theory system, according to non-inertial tow motion system various multi-linear vector concrete deductive calculus and analyse, it can be determined that after electron and positron collide (combined at shout-range distance reacted by strong force), they form excited state neutrino,then reacted by weak force for a relaxation time becomes un excited state neutrino and release large energy photon or phonon, its mass tends to zero.

新理论体系，按非惯性牵引运动系，各类多线矢的具体演绎矢算分析，可以判定：电子与正电子碰撞(在近程条件强力作用下结合)成激发态中微子后，再在弱力作用下，经一定的弛豫时间，形成非激发态中微子并释放大能量的光子或声子，其质量近乎为零。

Positron emission tomography is a kind of atraumatic technology which can detect in vitro the metabolic trace of emitted element in human body and can perform 3D imagings.

正电子发射断层成像技术是一种利用向生物体内部注入正电子同位素标记的化合物而在体外测量它们的空间分布和时间特性的三维成像无创检测技术。

This dissertation, based on microscopic view, by means of our unique Slow Positron Beam Line, with other analytical methods, studied the tungsten oxide films' chromogenic performance and chromism deposited by different ways.

本文从微观角度入手，利用特有的慢正电子束流装置，结合其它分析手段，对不同方法制备的WO〓薄膜变色性能及机理进行了研究。

Based on the results of tungsten oxide films measured by slow positron beam, a new chromism was brought forward to interpret the tungsten oxide films' chromogenic performance successfully on the electronic structure view. Meanwhile, the surface's absorption effects were verified.

根据慢正电子束流在WO〓薄膜变色过程中测量结果，从电子结构角度提出了新的变色机理，成功的解释了不同结构WO〓薄膜变色性能的优劣，同时也证实了膜表面的吸附作用。

A previous positron emission tomography study found that smelling AND and EST activated regions covering sexually dimorphic nuclei of the hypothalamus, and that this activation was differentiated with respect to sex and compound.

在先前的正子断层造影研究发现男性受试者闻到EST时，在下视丘有明显活化反应，女性受试者闻到AND时，在下视丘有明显活化反应。

The positron lifetime spectra were measured for the dehydration by pumping vacuum or by heating for USY samples respectively. Comparing with NaY, the results show that it is necessary to use four components to characterize Y zeolite with faujasite structure, and it needs another, i. e. the fifth component, to show the micro-structure information of the secondary pore for the Y zeolite which include much secondary pore.

测量了USY真空脱水以及加热脱水过程的正电子寿命谱，并与NaY的测量结果相比，结果表明：对于具有八面沸石结构的Y沸石需要用四个寿命分量来表征，对于含有大量二次孔的Y沸石还需要用第五寿命分量来表征二次孔的微结构信息。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。