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Consisting of the protracting graph of hydrogen-like atom"s angle distributing, computer simulation of the symmetry of molecular orbital and chemical reaction mechanism, showing the molecular point group and symmetry element, computer simulation of molecular vibration, Bravias"s crystal lattice and their transforming, extracting of plane periodic lattice, extracting of solid periodic lattice, close packing of isometrical pellet and the structure of simple mental substance, close packing of unequal pellet and crystal structure of representative ionic crystal, Computer Simulation of Phase Analysis by X-ray Diffraction.

内容包括类氢原子角度分布图的绘制，分子轨道对称性和反应机理的微机模拟，分子点群和对称元素显示，分子振动运动的微机模拟，布拉维晶格和晶格转化，平面点阵抽取，立体点阵抽取，等径网球的密堆积和金属单质结构，不等径圆球密堆积和典型离子晶体结构，X射线多晶衍射的微机模拟十个子模块。

The load carrying capacity and antiwear property of S,P containing benzotriazole derivative (BM 3) were evaluated using a four ball test machine,and compared with those of zinc salt di(T 202 ) and amine salt of complex ester thiophosphate (T 307 ). The antiwear mechanism of BM 3 were studied by investigating the chemical states and the mass fraction of elements on the rubbed surfaces using X ray photoelectron spectroscopy and electron probe microanalysis and the thermal decomposition products using gas chromatography mass spectrograph.

在四球机上对照评价了含硫、磷苯并三氮唑衍生物（BM－3）和二丁辛基二硫代磷酸锌（T202）及硫磷酸复酯胺盐（T307）的承载能力和抗磨性能，用X射线光电子能谱仪和电子探针微分析仪等对磨斑表面元素N，S和P的存在形式及表面膜的组成进行了分析，用气相色谱－质谱联用仪对BM－3的热分解产物进行了分析，并且还对其极压抗磨作用机理作了探讨。

By analyzing especially the principle of norland corporation xr-46 two-type x-ray bone density meter and the equipment's service cases, we discuss the importance of the medical instrument's calibration and maintenance.

本文介绍了常用骨密度仪的测量技术，对norland xr-46 双能x线骨密度仪的工作原理进行了分析，结合设备的维修案例，探讨了仪器校准质控和维护的重要性，给使用和维修人员提供故障处理的思路和方法。

In this new algorithm, 2-D X-ray images are collected for Ca, Si, Al, Fe, S, K, Mg, and grey-level value of the same point in these images are normalized and arranged as a vector in a particular order. In this paper, the vector is named as character vector, for it can be used to characterize each point in cement pastes 2-D image.

新算法采集水泥截面上Ca、Si、Al、Fe、S、K、Mg的二维X-射线图像，将这些图像同一点处的灰度值正规化并按一定的顺序排列后写成向量的形式，称为该点的特征向量。

Each section of S cut by a plane perpendicular to the x axis ...

用一个垂直于x轴的平面来切割S，所得的每个截面都是等边三角形。

Closest point to the problem is for two-dimensional coordinates of the point of the problem, the algorithm is to be planar point set on the S linear divided roughly equal to the size of two sub-sets of S1 and S2, we selected a vertical line l : x = m as a separate line.

最接近点对问题是求二维坐标中的点对问题，该算法是为了将平面上点集S线性分割为大小大致相等的2个子集S1和S2，我们选取一垂直线l：x=m来作为分割直线。

The Scanning electron microscopy is used to study the morphological features of porcelaneous layer s on surface of freshwater cultured pearls from Zhuji, Zhejiang Province, and the calcium carbonate polymorph of porcelaneous layer s is identified by X-ray powder diffraction.

采用扫描电子显微镜对中国浙江诸暨三角帆蚌养殖珍珠表面特别是无珍珠光泽的瓷质层的微形貌进行了研究，并采用X射线粉晶衍射对瓷质层进行了物相鉴定。

Somehow, Galliano's primrose path of inspiration had, he said, wended its way from John Singer Sargent's Madame X through to the gilded swirls and bejeweled geometrics of Gustav Klimt.

不知何故，加里亚诺的普利姆罗斯路径的灵感了，他说， wended其方式从歌手约翰萨金特的夫人的X向漩涡和镀金的结合geometrics的古斯塔夫克里姆特。

Rontgen's having discovered X-rays contributed much to world's science .

伦琴发现了x射线对世界科学贡献很大。

"At that time we didn't have the credibility of Google dust sprinkled on us," Gump said, noting a "sea change" in people's perceptions of the private space industry after aerospace pioneer Burt Rutan and his Scaled Composites firm's SpaceShipOne won the $10 million Ansari X Prize for reusable suborbital spacecraft

甘普说："当时没有谷歌的关注，别人并不太相信我们。"然而，宇航先驱伯特·鲁坦和他的美国缩尺复合体公司制造的"太空船1"号获得安萨里X大奖的1000万美元奖金后，人们对私人太空业的看法发生了"彻底改变"。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。