单型的

In order to get the optimal noisy matching,analyzed and compared inside resistance and noise characteristics of bipolar junction transistor、integrated operation amplifier and junction field-effect transistorand the characteristics of three coupled modes.

为了达到最佳噪声匹配，分析比较了双极型晶体管、集成运放及场效应管的内阻、噪声特性及三种不同耦合方式的特点，从而总结出对于低内阻信号源较理想的前置放大器的有源器件是单级或多级并联双极型晶体管。

There was significant difference among monoterpene volatiles released from healthy, weevil damaged trunks of Pissodes punctatus and their branches. Walking P. punctatus in maturation feeding and sexually matured stages displayed different olfactory responses toward monoterpenes in a Y-tube olfactometer.

通过GC-MS分析，发现健康的与遭受华山松木蠹象Pissodes punctatus Langor et Zhang危害的华山松Pinus armandii Franch树干以及华山松枝梢释放的挥发性单萜烯在含量上存在较大差别；利用Y-型双向选择嗅觉仪进行的室内趋向反应实验发现，处于补充营养期和交尾产卵期的华山松木蠹象对单萜烯表现出不同的趋向反应。

It is in Japan and Taiwan separated from the plane on the basis of the Division I researchers developed a new type of fiber separator, the first in the domestic production of single-effect separator manufacturers, patent number: 200730017298.8 one outlining the type XRDF-Ⅱ Single-efficiency separator for separation of waste paper in the light and heavy debris and water from the pulper slurry broken for the second solution.

该机是在日本和台湾分离机的基础上由我司科研人员开发出来的一种新型纤维分离机，在国内第一家生产单效分离机的厂家，专利号：200730017298.8一、概述 XRDF-Ⅱ型单效分离机主要用于分离废纸浆中的轻重杂物，并对来自水力碎浆机的浆料进行二次碎解。

Over a field of arbitrary characteristic, we construct a class of associative superalgebras of Weyl type and a class of Lie superalgebras of Weyl type from ∧(2, 2) and the polynomial algebra of the special deravation subalgebra of it. In addition, we prove that the sufficient and necessary conditions of the simplicity of the associative and the Lie superalgebras.

在任意特征域上，从∧(2，2)和它的特殊导子的子空间的多项式代数出发，构造了一类Weyl型结合超代数和一类Weyl型李超代数，进而给出并证明了它们为单的充要条件。

We study the phase-separation and microstructure of the pure binary and trinary mixed LB and LS films of Dimyristoyl phosphatidyicholine cholesteroland sphingomylin deposited from pure water subphase by π-A isotherms and tapping mode Atomic Force Microscopy.

在本章中我们用这种极易溶于水的阳离子型聚合物PEI为一软垫，研究以此软垫为基底的不同生物分子和它们不同种二元及三元混合单分子膜体系在含PEI亚相上的相结构情况，初步的讨论了它们以云母为基底的IS膜和LB膜的微结构或者说是该软垫对单分子膜微结构的影响。

Abstract］ objective to improve the diagnosis of non-ossifying fiboma by analysing its x-ray feature.methods plain x-ray films was performed in all patients.x-ray finding in 8 cases with pathologically-confirmed non-ossifying were analyzed.results the clinical symptom was mild,the lesions occurred usually at the metaphysis of the long bones,the affected bones included femur（n=4）,tibia（n=3）,humerus（n=1）.cortical type was seen in 5 cases,presenting as unilocular or multilacular transparent areas with in the cortex or tightly beneath the cortex,the lesion had a sclerotic margin.which was more obvious at the marrow side.medullary type was seen in 2 cases.the lesion was located at the center of the bone and grew centrally.the tumor was manifested as unilocular or multilocular.tramsparent area with sclerotic border and the bone cortex became thinner with slightly expanding on 11 sides.conclusion plain radiography is the elementally means to detect this disease.based on the typical x-ray signs of non-ossifying fibroma combined with clinical data,correct preoperative diagnosis can be made in most cases.

目的 探讨非骨化性纤维瘤的x线表现以提高诊断水平。方法所有病例均摄有x线平片，分析经病理证实的8例非骨化性纤维瘤。结果临床症状轻，好发于下肢长骨干骺端或骨干，股骨4例，胫骨3例，肱骨1例。皮质型5例，表现为皮质内或紧贴皮质下的单层或多层透亮区，病变向骨内发展进入髓腔，周围有致密硬化带环绕，以髓腔侧明显；髓质型2例，病灶在骨内中央发展，显示为单房或多房透亮区，边缘有硬化，骨皮质菲薄，轻微向周围膨隆。结论 x线为最基本的检查方法，典型病例x线平片结合临床症状即可明确诊断。

Nowadays the researches of frequency distribution of data are almost limited to normal distribution, while other distributions are seldom studied. Many frequency distributions of data are not normal. This kinds of frequency distribution of data widely exist. Unimodal frequency distribution of data often occurs.

现在绝大多数关于频数资料分布的研究都是基于正态分布的，而对其他类型的分布研究得比较少，实际上频数分布在许多情况下并非呈现正态分布，分布的形态丰富多彩，很多资料都是呈现单峰分布，本研究就是利用数学上常见的八种连续型变量的分布类型去拟合单峰频数资料。

To eliminate common-mode voltage of cascaded multi-level inverter, three kinds of phase-difference SVM based on left and right bridge vectors are proposed firstly. From these three modulations, equivalent SPWM components are deduced, and the unipolarity and bipolarity of output waveforms are analyzed. 2π/3 PD-SVM (phase-difference space vector modulation) is testified be unipolar.

为消除级联型多电平逆变器的输出共模电压，首先提出了基于左、右桥臂矢量的三类相差空间矢量调制(space vector modulation，SVM)技术，数学推导出三类调制技术的等效正弦脉宽调制(sine pulse width modulation，SPWM)的调制波，并分析了其各自相电压输出波形的单、双极性，证明2π/3相差SVM必为单极性调制。

According to the classification, there were single-tube in 25 and double-tube in 96 patients. One hundred and two patients with diastematomyelia were treated by operation and ninteen by conservative treatment. The clinical results were retrospectively analyzed according to scoring neural function and monitoring the peak P40 of posterior trivial nerve cortical somatosensory evoked potential before and after treatment.

方法］对1978年5月～2006年1月收治的有完整资料的121例单管型及双管型脊髓纵裂手术及非手术治疗的病例进行回顾性分析，并通过临床神经功能评分及胫后神经皮层体感诱发电位P40波峰监测，评价其手术治疗的疗效。

One hundred and two patients with diastematomyelia were treated by operation and ninteen by conservative treatment. The clinical results were retrospectively analyzed according to scoring neural function and monitoring the peak P40 of posterior trivial nerve cortical somatosensory evoked potential before and after treatment.

方法］对1978年5月～2006年1月收治的有完整资料的121例单管型及双管型脊髓纵裂手术及非手术治疗的病例进行回顾性分析，并通过临床神经功能评分及胫后神经皮层体感诱发电位P40波峰监测，评价其手术治疗的疗效。

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。