对比

Density weighted harmonic averaging middle operator; argument clustering; density weighted vector; aggregation

从密度加权平均中间算子（文中式（3））和密度加权几何平均中间算子的（文中式（4））的形式与平均数的形式进行对比，很容易得到密度加权调和平均中间算子（文中式（7））。

Through the comparison between at home and abroad, caving has developed on the stage of mature, organization and implementation of caving is perfect, the participants includes not only professional researchers but also a avocational lovers, the caving in our country is in its developing stage, and the caving technology and equipments are backward, caving security system is not complete, the participants are only the professional researchers and has not reach the stage which is popular.

通过对国内外洞穴探险发展的对比研究，指出洞穴探险在国外已经发展到了成熟阶段，洞穴探险的组织实施以及洞穴探险保障体系也发展地较为完善，参与洞穴探险的不仅仅是洞穴研究人员，更多的是业余的洞穴爱好者。

To observe the change of patients' blood pressure, serum lipid, pulse, avoirdupois, waistline, hipline.

治疗前后分别测定每名患者的OGTT、胰岛素释放试验及C肽水平，进行前后对比，数据以均数±标准差表示，采用t检验。

A mechanical calculation method, which was used to analyze the deformation of axial symmetry in plastic process , is put forward in this paper.

针对塑性加工过程中的轴对称变形问题，提出了一种力学计算方法，论证了圆环坐标系的坐标变换法则和主要力学方程，然后将理论计算值与实验条件下的实测值进行对比。

The velocity distribution of the numerical simulation and the theoretical equations calculation are compared on the condition of axial symmetry.

结果表明，在轴对称条件下，对数模、理论计算的速度分布进行对比分析，证实了旋涡流场不仅是径向的函数，而且还是轴向的函数。

This paper describes the basic principle of velocity pursuit guidance law and body pursuit guidance law of trajectory correction projectiles , researches the terminal correction trajectory and miss distance under pursuit guidance laws by 6—DOF trajectory simulation program, researches the orbit of laser detector ray axis and ground projection area of laser detector spatial viewpoint.

文中对速度追踪制导律和弹体追踪制导律的工作原理进行了研究，利用六自由度弹道仿真程序对弹道修正弹两种追踪方式下的末段修正弹道和脱靶量进行了对比计算，研究了两种追踪方式下激光探测器光轴的轨迹及激光探测器空间视场在地面投影区域的变化；弹体追踪方式命中精度虽然较低，但由于工程实现简单、成本低，仍有其工程使用价值。

The problems of teaching administration are investigated and analyzed, it is reachered and analyzed that domestic and abroad course arranging arithmetic such as heredity arithmetic, simulation-back arithmetic, expert system arithmetic, backdate arithmetic and first class arithmetic. A point of view that the target result is only subordinate result is clanitied.

通过对中职学校的教务管理排课问题的调查分析和国内外排课算法(遗传算法、模拟退火算法、专家系统方法、回溯算法、优先级算法等)的对比研究分析，阐明了由于排课问题算法的时间复杂度极高，实现有一定的难度，求最优解是理论上的，目标解只能是次优解的观点。

This paper is studying fluctuation of price, backwardation and contango in future markets. Based on the theory of future market and spot market, it takes a further analysis of Robert and Nir's study of backwardation in oil future markets. By data acquisition and processing, descriptive statistics and time series analysis, it investigates the relationship between backwardation and the equilibrium of oil future prices and spot prices.

本文根据期货和现货的相关理论研究，以Robert和Nir对石油期货市场延期交割费的研究为基础，采用数据收集、对比统计分析和时间序列分析的方法，建立模型进行实证分析，对石油期货市场延期交割费的相关问题进行了研究。

The treatment compliance,bacteriology,chest radiographs and blood glucose level,and other indicators were contrasted.

从治疗依从性、细菌学、胸部X线和血糖值等指标观察对比。

Reach what the SPF class small rat that its feed undertakes bacterium and helminth 1 year to monitor to this system continuously, live to what bandicoot undertakes imitate cuts off the power and bacterioscopy, be in to raising the comparative test that the small rat of SPF class KM of traditional protective screen system and IVC system has immune index.

连续1年对该系统及其饲养的SPF级小鼠进行细菌和寄生虫的监测，对大鼠进行模拟断电的生存和细菌检查，并对饲养在传统的屏障系统和IVC系统的SPF级KM小鼠进行免疫指标的对比实验。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。