有射线的

The crystal structure of trioxane was accurately determinated. By using the crystal structure model of trioxane, the ring-opening polymerization mechanism of trioxane by γ-irradiation may be fairly well explained. Polyoxymethylene obtained by solid state polymerization of trioxane may have two types of molecular chains with different orientations, one parallel to the C...

我们精确测定了三聚甲醛的晶体结构，利用三聚甲醛晶体结构模型，可以很好地阐明三聚甲醛在受到γ射线辐照后开环聚合的机理，由三聚甲醛晶体固相聚合得到的聚三聚甲醛，应该有两种不同取向的分子链，一种与三聚甲醛的c轴平行；另一种与c轴成75°37′的交角。

Because the strength of springwood was very low, the strength of board which included more springwood was low. The main reason why there was no difference in wet compressing shear strength between quarter-sawn board and flat-sawn board was that quarter-sawn board had a lot of pits on radial cell wall and in flat-sawn board xylary rays were transversely cut and left a lot of pores which provided a kind of tunnels for water.

造成柞木径切板的反复煮沸压缩剪切强度与弦切板的反复煮沸压缩剪切强度没有显著性差别的主要原因是柞木细胞壁径面上的纹孔很多，而弦面上的木射线在经刨削后是横断的，留下许多孔隙，这使得弦径向均有成为水分通道的孔隙，造成柞木径切板的反复煮沸压缩剪切强度与弦切板没有显著性差别。

The coordination geometry of the Eu atom is best described as a strongly distorted square-antipyrism.. The two Eu atoms are bridged by two N-oxide oxygen atoms forming a dimeric unit with crystallographic inversions centre. The Eu……Eu distance is 4.2137(9)〓. The two europium atoms and two bridging oxygen atoms is coplanar. The angles of Eu(1)-O(7)-Eu(1A) and O(7)-Eu(1)-O(7A) are 117.82(14)° and 62.18(14)°, respectively. 15 is the first dinuclear triboluminescent lanthanide complex reported.

同时还测定了其摩擦发光光谱与其光致发光光谱，并讨论了晶体结构和摩擦发光活性之间的关系。X-射线结构分析表明，15为有对称中心结构的配合物，每个Eu与三个HTTA的六个O原子和两个PyO的两个O原子形成八配位的四方反锥几何构型，2个N-Oxide O原子桥联两个Eu，形成了一个双核配合物，Eu。。。。

In 1966 Kenneth Greisen, Vadim Kuzmin and Georgiy Zatsepin showed that high-energy charged particles (cosmic rays are mostly atomic nuclei, and thus positively charged) should be slowed by collisions with the photons of the cosmic microwave background (radiation left over from the Big Bang that permeates all space).

1966年，肯尼思·格雷森、瓦迪姆·库兹民与乔奇·扎采品表示，充有高能量的粒子（大多数太空射线都属于原子核，因此也就具有正电）应该会由于太空微波背景下（渗透到整个宇宙的大碰撞所遗留下的辐射）的光子碰撞而减慢速度。

In this experiment, the optical microscope was used to observe and analyze that nickel-plated veneer and we found Nickel depositing in the cell cavity, ray, pit, tracheae, and fiber of timber.

通过对化学镀镍单板的光学显微镜观察和分析，化学镀镍的单板在木材的细胞腔和细胞壁上的木射线组织、纹孔、管胞、木纤维上都有金属镍的沉积。

Due to that the radio afterglows of GRBs show significantly different behavior from the optical and X-ray afterglows, studies on them become very important and should be fruitful.

暴的观测也发现了射电余辉，因射电余辉随时间的演化与光学和X射线余辉有显著不同，研究射电余辉的行为便具有特别重要的意义。

Low-sulphur Yanzhou coal and high-sulphur Changguang coal were selected as experimental coals, experiments of formation of Q phase in the process of cement clinker cogeneration were performed on two-stage polyphase reaction setup.

选取低硫兖州煤和高硫长广煤为实验煤种，在两段多相反应实验台上进行联产水泥熟料过程Q相矿物的生成实验，对所得熟料进行矿物组成X射线衍射分析，结果表明低硫兖州煤和高硫长广煤联产水泥熟料，当混合煤粉中添加适量的CaO、MgO时，联产熟料中有Q相矿物的生成，联产过程中Q相矿物的生成机制与单矿物2CaO。

Porous alumina templates with different apertures were fabricated by changing the oxidation voltage in two-step anodic oxidation, and then Cu nanowires were synthesized in porous alumina by the alternating current electrochemical deposition method. The Cu/PAA was analyzed by SEM and XRD, the results have shown that Cu nanowires were indeed synthesized in porous alumina which had the same diameter and good structure of wire grating.

通过改变二次氧化过程中的氧化电压，制备了不同孔径的多孔Al模板；采用交流电沉积的方法，制备了含Cu阳极PAA膜。X射线衍射分析表明，阳极PAA膜上确有Cu生成；扫描电镜显示，Cu纳米线粗细均匀，具有很好的线栅结构。

An accurate and well-adapted simulation method of projection data for cone-beam CT, which can describe the details of each tomography, is proposed in this paper.

在重建算法的研究过程中，模拟投影数据是必不可少的一部分，一方面可以避免实测投影数据的误差，为后继CT重建算法提供理想的投影数据；另一方面也可以根据需要有选择地模拟失真如：探测器偏移、旋转、响应不一致，射线源

The Laue detector is a new type of fluorescence XAFS detector, which has advantages of good energy resolution, high counting rate and big acceptance area.

劳埃型荧光X射线吸收精细结构探测器是一种新型的探测器，它具有能量分辨好、计数率高和接收面积较大等优点，对于高光通量场合的痕量元素XAFS实验具有很高的灵敏度，有很好的应用前景。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。