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These catalysts were evaluated by a liquid phase hydrogenation of crotonaldehyde to crotyl alcohol and characterized by X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy.

采用沉积－沉淀法制备了纳米Au/TiO2催化剂，以X射线衍射、透射电子显微镜、X射线光电子能谱等手段对催化剂进行了系统的表征，并考察了该催化剂在巴豆醛液相加氢制巴豆醇反应中的催化性能。

In the fifth chapter,the substitution in the B site CuIr_(2-x)M_xS_4 system is investigated.W acts as W~(4+) in the CuIr_(2-x)W_xS_4 system,while Mn exists as Mn~(2+)in the CuIr_(2-x)Mn_xS_4 system.

第五章中我们对B位掺杂体系CuIr_(2-x)M_xS_4进行了研究。W在体系中以W~(4+)存在，而Mn则以Mn~(2+)存在。

Size: 7.9" x 7.9" x 3.1 - Damier canvas, adjustable textile shoulder strap, terracotta textile lining - Matte brown metallic pieces and golden brass zipper - Zipper opening - Outside flat pocket - Carried on the shoulder or across the body PRODUCT ID: N41442 小号 Olav

手袋线条流畅，拉链开合设计，可放记事本、手机、钱包、钥匙等。尺寸： 7.9& x 7.9& x 3.1 - Damier帆布袋身，布肩带可调整长度，赤土色布衬里-褐色哑光金属配件，金色黄铜拉链-拉链开合-手机袋-外贴袋-肩背或斜背参考： N41442

Methods Through questionnaires,the annual number of X-ray diagnostic examination of the whole province was investigated,according to it,hospitals were arranged decreasingly into four levels,and proceeded the stratified random sampling on the rations of

阳性率是判断X射线诊断检查应用是否符合合理应用原则的重要指标之一。X射线诊断检查的阳性率应保持在一个合理的水平上，如果阳性率过低，表明无临床意义的X射线诊断检查的应用过多，应当采取措施予以限制。

The results showed that:(1) the upper elevation limit of the closed forests was found to be 4320 m; the timberline elevations was 4520 m on the sunny side with a gradualtype;(2) for the diameter class structure of the populations, most individuals were from Ⅰto Ⅳ, the number decreased sharply with the increase of diameter class, the survival curves were between Deevey type Ⅰ and Ⅱ, with an approximately stalbe trend; the variation trends of mortality rate q(subscript x and hazard ratek(subscript x were similar;(3)the analysis by time sequence model demonstrated that the individuals of the older age class would be increasing, indicating that S.

死亡率q(下标 x和消失率k(下标 x变化基本趋势一致；都在Ⅲ龄级出现低谷；以后死亡率和消失率曲线均随龄级增加而上升；时间序列分析表明；未来种群发展老龄个体逐渐增多。

X-rays are used because they have the same wavelength as the atomic separations so the crystal acts as a molecular diffraction grating to diffract a beam of X-rays, producing a diffraction pattern that can be captured and analyzed.

之所以使用X射线是因为其波长和原子裂解时的波长一样，所以晶体作为分子衍射光栅衍射X射线，产生一种可以获取并分析的衍射图形。

X-rays are used because they have the same wavelength as the atomic separatio so the crystal acts as a molecular diffraction grating to diffract a beam of X-rays, producing a diffraction pattern that can be captured and analyzed.

之所以使用X射线是因为其波长和原子裂解时的波长一样，所以晶体作为分子衍射光栅衍射X射线，产生一种可以获取并分析的衍射图形。

The crystal monochromator is a key device of the X-ray beamline. It uses crystals as dispersive elements to diffract and separate the synchrotron radiation, and provide X-ray monochmmatic light with a given energy bandwidth.

晶体单色仪是X射线光束线上的关键设备，它用晶体作为色散元件，衍射、分离具有连续光谱的同步辐射，向用户提供一定带宽的X射线单色光。

Leaves basal, opposite; petiole 5-10 X 4-10 mm; leaf blade ovate to orbicular-ovate, 5-8 X 4-7 cm, papery, densely appressed puberulent and appressed pilose (hairs to 1 mm and to 3 mm), eglandular, base broadly cuneate, margin subentire to repand-crenate, apex acute to rounded; lateral veins ca.

叶基生，对生；叶柄5-10 X 4-10毫米；卵形叶片卵形到圆形， 5-8 X 4-7厘米，纸质，浓密贴伏被微柔毛和贴伏的具柔毛的(对1毫米和对3毫米的毛)，无腺体，基部宽楔形，侧脉约4在中脉每边各，不明显。

BMD was measured and healing condition was evaluated by X-ray observation and Dual Energic X-ray Absorptionat weeks 4,8,12 and 16 after operation,respectively.

术后4，8，12，16周行X射线观察和双能X射线吸收仪测量骨密度，评价骨缺损修复情况。

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。