类并

Various synthetic methods of the cleavable cyclic acetal-type and ketal-type surfactants were reviewed to provide references for the synthetic route design of these type surfactants and their major research direction in the future were indicated.

综述了可分解型环状缩醛类和缩酮类表面活性剂的各种合成方法，为该类表面活性剂的合成路线设计提供参考，并指明了今后的主要研究方向。

On the basis of study on two projects:"10-DOF ultrasonic detection system for complex surfaces part" and "Ultrasonic water-logging automatic survey system for rods", this thesis studies the technologies of ultrasonic measurement, kinematic and dynamic modeling of 10-DOF ultrasonic system, real-time sensitivity auto-adjusting, integrated technology of ultrasonic measurement, surface construction and ultrasonic detection for complex surface parts and rods, thus improving the accuracy and efficiency of ultrasonic detection for parts of complex surfaces. Meanwhile, an auto-detection system for metal rods with rough surfaces and bad columniform accuracy is presented for the first time.

本文结合&10自由度复杂曲面超声检测系统&和&棒材水浸超声自动检测系统&两个项目的研究，主要开展了超声测量、检测机器人运动学和动力学建模、误差补偿、灵敏度自动补偿和曲面构件超声检测一体化技术和轴棒类构件超声检测一体化技术的研究工作，进一步提高了复杂型面构件超声检测的效率和精度，并首次针对表面粗糙、圆柱度较差的金属轴棒类构件开发出了高效率的自动化检测设备。

The results showed that the mole ratio of three ligands to CoCl_2, NiCl_2 were 1:1 and to CuCl_2, ZnCl_2, CdCl_2 were 2:1, The IR, UV-Vis and FS of complexes were investigated. Their IR peaks were classified as the corresponding groups or bonds; The relation of their structure with the conjugative effects, absorbtion wavelength and molar absorb coefficients were discussed with the UV-Vis and FS.

结果表明：噻唑类配体与金属CuCl_2，CdCl_2配位比分别2∶3和3∶2，至于配位机理还需进一步探讨；硒二唑配体与CoCl_2和NiCl_2配位比均是1∶1，而与CuCl_2、ZnCl_2和CdCl_2的配位均为比2∶1；对配合物的IR吸收峰进行了归类与指认，并对配合物的紫外和荧光光谱进行讨论分析，推测硒二唑类化合物与金属发生配位的部位是v中Se原子与金属配位。

In order to increase the stability and hence increase the oral antiinflammatory activity, and as well as to de- crease or abolish the anticancer activity of type I com- pounds, an alkyl group was incorporated into the side chain of cyclopentanone Mannich base to generate type Ⅱ compounds.

为提高化合物的稳定性以使化合物经口给药时具有抗炎活性，同时降低或消除抗癌活性，本文将Ⅰ类化合物的Mannich碱侧链部位引入烷基而设计并合成了Ⅱ类化合物（共18个）。

Aiming at researching on the theory of the shaft-kind parts form error evaluation and its application, on the basis of the analysis for the geometric model of the roundness error and cylindricity error, the linear programming models of the enclosure evaluation were proposed. According to the features of the proposed models, the solution of the optimization algorithms of linear planning was discussed to obtain accurate evaluation results.

为了对轴类零件形状误差评定理论及应用进行研究，在分析轴类零件的圆度、圆柱度误差评定几何模型的基础上，建立了包容拟合评定的规划数学模型，并针对模型的特点，探讨了使用线形规划的单纯形优化算法进行规划模型的求解，从而获得精确的形状误差评定结果。

A series of successional changes follow cach major tephra fall.initially the woody taxa are killed off and replaced by grass and Cyperaceae that rapidly colonise the fresh surface.

在每次火山灰降落后，都会有一系宁继后变化，木本类最早死亡，禾草类和莎草科取而代之，并很快占据裸露的地表。

The research development of β-diketo in costabilizer field,luminescence field,catalyzer field and extraction field was reviewed.

对β-二酮类化合物在热稳定剂领域、发光领域、催化领域、萃取领域的研究进展进行了综述，并对β-二酮类化合物的发展方向和应用前景提出了自己的见解。

Now,it has the development and production ability of about 300 kinds of specifica-tions and about ten varieties as cooking utensils series braising and steaming series, the refrigeration equipment series: the platform and cabinet series,washing series,lampblack exhauster series,environmental protection product series,food pro-cessing machinery and vehicle series,dining table series and so on, and acts for all kinds of western-style food kitchenware.

天海厨房设备厂，专业从事宾馆、酒楼，企事业单位、学校等厨房设备的策划、设计、生产，现拥有灶具系列、蒸煮系列、制冷设备系列、台柜系列、洗涮系列、排油烟系列、环保产品系列、食品加工机械、车类系列、餐桌等十大类近300种规格品种的开发生产能力，并代理各种西餐厨房设备。

Four types of reservoirs in the member have been classified according to the standard, combined with the explorational practice. The result shows that the reservoirs in the member are poor in both porosity and permeability. Their pore-throat distribution shows three...

研究结呆表明，塔中地区志留系下砂岩段储层表现为低孔低渗的储集特征，孔喉类型为单峰中孔、单峰细孔和单峰微孔型，以Ⅱ、Ⅲ类储层为主，Ⅱ类储层主要分布在下砂岩段下部，在塔中20至塔中30并区较发育，是塔中志留系勘探的有利区带。

B A fuzzy clustering method is developed based on the ISODATA and is applied to the classification and fractionization of suspended and bed loads, respectively. The size clusters of real physical meanings have been identified from the calculation results based on the Wentworth Classification.

在模糊迭代自动聚类方法基础上，发展了一种理论演绎更加严密、物理概念更加明确的模糊聚类方法，并应用于河口表层沉积物和悬移质的分类和分级。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。