中分

The participants were fifth grade students and they were divided into high score group, middle score group, and low score group according to their achievement in the learning area of science and technology. There were two learning projects in two periods of experimental instruction with different participants: the first project was concave and convex lens and the second project was the investigation of sound and create instrument.

研究对象为国小五年级学生，以学生的自然与生活科技学习成就，将学生分为高分群、中分群、低分群，进行不同研究对象的二阶段实验教学，其学习主题：第一阶段为「凹透镜与凸透镜」，第二阶段为「声音的探讨与乐器制作」。

This paper attempts to explain floatability classification parameters of coals through the theoretical data of float and sink in comparison with flotation efficiency.

本文嘗試利用煤在重液中分離所得的理論指標與煤的浮選效率的比較關係來探討煤的浮選性分類指標。

Fractal and wavelet process inherently multiple-scale property and scale invariant that can be competent for roughness features in textural representation of texture image.

本文主要讨论分形维数理论在纹理图像特征提取方面的应用，首先我们系统地分析了图像处理中分形维数估计的一般计算方法，然后在此基础上做了改进。

Part 1 Evaluation of the diagnostic values of lobulation sign on the differential diagnosis of peripheral lung cancer and pulmonary tuberculoma in CT images.

第一部分分叶征在四周型肺癌与结核球CT鉴别诊断中价值的评价目的应用Meta分析的方法探讨CT检查中分叶征及深分叶征对于四周型肺癌与结核球鉴别诊断价值。

The invention combines the visual divided storage technique with the 3D stereograph technique by the data fusion technique, therefore, each generated icon is a 3D stereograph in which the confidential information is stored dividedly.

本发明通过数据融合技术，将可视分存技术和三维立体画技术结合起来，所生成的n幅图标每一幅单独是三维立体画；又可以在三维立体画中分存隐藏秘密信息。

The Difference Amplifier 差分放大器: The difference amplifier is the complement of the summing amplifier and allows the subtraction of two voltages or, as a special case, the cancellation of a signal common to the two inputs.

电路见图5，这种电路在运算电路中相当有用，比如差分对单端的转换，抑制共模信号。

The experimental results show that when the low temperature adhesive polyvinyl alcohol is 0.5%, the high temperature adhesive silicasol is 0.5%, water reducing agent calcium lignosulphonate is 0.5%, rheologic agent Suzhou clay is 1.5%, the best dispersive slurry can be obtained by adding 0.9 weight percent of TMAH.

结果表明，在粘结剂聚乙烯醇加入量为0.5%，减水剂木质素磺酸钙加入量为0.5%，流变剂苏州土加入量为1.5%时，调整分散剂的加入量，当浆料中分散剂四甲基氢氧化铵的质量分数为0.9%时，可获得具有较佳分散性能的浆料。

Methods 139 patients with lipocele in fassia of lumbosacral region were treated surgically.

目的正确认识腰骶部筋膜脂肪疝，提出临床区域分型和术中分型，并探讨治疗方法。

This paper proposes a new geographical-based clustering algorithm for MEO/LEO satellite networks management by introducing the concept of clustering of ad hoc networks.

通过引入ad hoc网络中分簇的概念，提出了一种适用于MEO/LEO卫星网络管理的基于地理信息辅助的分簇算法。

The desulfurization experiments of CaO samples with various fractal dimensionswere carried out in the TGA to investigate the influences of fractality on the sulfationreaction, and the evolution of pore structures during the reaction. Under certainsulfation conditions, the calcium conversions of the CaO samples increase with theincrease in fractal dimension when fractal dimension is less than 2.68, and decreaseswhen it is more than 2.68. In the range of the experiment temperatures, the calciumconversion for a sample with a lower fractal dimension increases with the increase inthe temperature, and for a sample with a higher fractal dimension there exist anoptimum temperature at which the sample can reach the highest calcium conversion.

选用具有不同分形结构的CaO试样进行了硫化实验，研究孔结构的分形特性对硫化反应的影响以及硫化过程中分形孔结构的变化特性，实验结果表明，在一定的分形维数范围内，随着分形维数的增加，钙利用率增大，但分形维数超过一定值时(约为2.680)，钙利用率反而降低。

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。