可利用性

On the base of large quantitative test, using coal petrography and organic geochemical data, the source of oil and gas in the coal-measures is analyzed. And it is concluded that the area's Yan'an group coal-bed has a low potential of oil production, and the oil and gas contained in the coal-measures and superjacent strata comes from underlying Upper Triassic Yanchang group strata. After a series of parameters of coal seam and surrounding rocks are tested, gas formation, storage, preservation, permeability of the coal-rock seam are analyzed and evaluated.

本文在大量测试工作基础上，利用煤岩学与有机地球化学资料，分析了煤系油气的来源，认为本区延安组煤系煤层生油潜力差，煤系及其上覆地层所含油气为下伏上三叠统延长组源岩所生，油气主要通过迭置的砂体、不整合面、构造裂缝等自下向上运移进入煤系；通过对煤层及围岩一系列物性参数的测试，分析与评价了煤岩层的生、储、盖、渗性能与可抽放性，得出主采4_(-2)号煤层属中等储集、低渗透层，围岩封闭性差，渗透性高，煤层瓦斯含量低，而顶板砂岩瓦斯含量高，为采面瓦斯涌出的主要来源。

Theexperimental results show that the performance ofthe dies can be remarkably raised through homogenizing original microstructure,controlling austenitizing and tempering process,and coordinating therelationship among undissolved carbide,...

结果表明，通过调整原始组织，严格控制奥氏体化条件及回火工艺，合理利用第二相、基体成分和残留奥氏体的关系，可显著提高强韧性和耐磨性，使冲模寿命比常规工艺处理提高10倍以上。

Since vanillin is generally regarded as safe, it may be of value in the development of anti-metastatic drugs for cancer treatment.

由于香草普遍视为安全可开发利用价值的反转移性癌症治疗药物。

In this paper, the weight value was obtained by analytical hierarchy process and the risk and venerability are considered together to do extensible evaluation model. Hence, the later way is good for process management and getting reasonable calculation.

本次权值是利用层次分析法来计算获得，并将危险性与易损性作为一个整体，采用可拓评判法进行风险评价，这种方法有利于程序化管理，计算结果也更合理。

In chapter 2, we investigate the structure of finite groups under the condition that all special subgroups are conjugate-permutable subgroups and obtain some sufficient conditions for solvability, Abelian property of finite groups.

第二章主要是利用一些特殊子群的共轭置换性得到了有限群成为可解群、交换群的一些充分条件，改进和推广了文[1]和[4]中的部分结果，有些结果是新的。

Based on the characteristics of CMAC neural network and fuzzy control,the novel controller of fuzzy CMAC neural network that reflects the fuzziness and continuity of human cerebella is discussed.

针对 CMAC神经网络和模糊控制的特性，给出了一种能反映人脑认知的模糊性和连续性的模糊 CMAC神经网络控制器，该控制器采用高斯函数作为模糊隶属函数，利用神经网络实现模糊推理并可对隶属函数进行实时调整，从而使其具有学习和自适应能力。

The results show that SO2 gas itself does not influence the growth of ZY-1, however, when the SO2 concentration is higher than 50×10^(-6), ZY-1 growth rate and its CO2 fixation rate are all lowered and the pH of the medium is decreased, so measures must be taken to desulphurize or control pH of medium temporality. The presence of NO with concentrations of lower than 300×10^(-6)did not influence the growth of ZY-1 and its CO2 fixation, NO absorbed in the medium is utilized as a nitrogen source. The influence of dissolved soot dust on ZY-1 growth and its CO2 fixation could be ignored once the soot dust in the stack gases was disposed by the original method.

结果表明，烟气中的SO2是以增加培养液中的SO2^(-2)浓度及降低pH的形式来影响ZY-1的生长及其对CO2的固定的，当其浓度大于50×10^(-6)时，需要进行烟气脱硫或控制培养液pH变化来消除其影响；烟气中NO浓度不高于300×10^(-6)时，不影响ZY-1的生长及其对CO2的固定，反而可作为氮源供ZY-1生长用；对经过一般除尘处理的烟气来说，在利用小球藻ZY-1固定CO2时可不考虑溶解性烟尘的影响。

In order to solve the problem of path tracking for 3-DOF mobile robot with two drivable and steerable wheels, The path-tracking control algorithm is investigated via fuzzy control technique which realizesd independent tracking of position between orientation of mobile robot and enhances the real-time characteristics of tracking control.

针对具有两个可操舵驱动轮的 3自由度移动机器人的轨迹跟踪问题，利用模糊控制技术设计了路径跟踪控制器，实现了移动机器人的位置和方位的独立跟踪，同时提高了跟踪控制的实时性。

Citrus is one of the most important economic fruit trees, and its germplasm resources can be preservated effectively with embryogenic calli.

柑橘是世界上有重要经济价值的果树之一，利用柑橘胚性愈伤组织可有效地保存其种质资源。

APUHD was prepared with PEPUD acted as emulsor and reactive seeded emulsion in polymerization of acrylate monomer.

利用可聚合自乳化聚氨酯水分散体作为乳化剂和反应性的种子乳液与丙烯酸酯等单体共聚，其优点在于能调节聚氨酯水分散体侧链上参与共聚的双键数目，使聚氨酯和丙烯酸酯两相聚合物体系间直接化学键合增强，相容性提高，增加体系内部交联密度，合成得到具有核壳间互穿网络结构的丙烯酸聚氨酯杂合水分散体。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。