查询词典 competition range

From the angle of a beam-forming, the cross- range focusing principle of the synthetic-aperture radar based on nonsinusoidal waves is studied. The expressions of antenna pattern for both rectangular signa l and Gaussian signal are presented. Compared with the conventional narrow bandw idth SAR whose cross-rang resolution is determined by the carrier frequency, th e cross-range resolution of the nonsinusoidal SAR is affected by the signal ban dwidth.

为研究非正弦波SAR的方位向分辨力，从波束形成的角度分析了非正弦波SAR的方位向聚焦原理，导出了基于矩形脉冲和高斯脉冲的合成孔径天线阵列方向图表达式，并与常规窄带SAR进行比较，指出影响非正弦波SAR方位向分辨力的主要因素为合成孔径长度和信号带宽，而与信号载频无关。

Requires extraordinary technical proficiency of the ball, running fast, skilled with the ability to have long-range, and shot a breakthrough technology Qiangdian outflanking shot. In the 1970s, the scope of their duties and activities of a more expanded offensive will no longer be limited to activities within the scope of this position, but often in the middle of the cut, play the role of the center, or with different side of the wing for a wide range of The cross, or retracement from midfield to the role of the avant-garde in order to achieve a variety of effective tactics to attack with.

要求具备熟练的带球过人技术，有快速奔跑、熟练配合的能力，并具备远射、突破射门及抢点包抄射门的技术。20世纪70年代以后，其职责和活动范围更为扩展，进攻时不再仅限于本位置范围内活动，而是经常向中间内切，起到中锋的作用，或与异侧的边锋作大范围的交叉，或回撤至中场起前卫的作用，以实现各种有效的进攻战术配合。

The proposed algorithm divides the overmodulation range into two parts, and allows smooth transitions through the entire operating area, from the linear range up to six-step operation, and keeps the linear relationship between the output current and the modulation index.

该方法根据调制比将整个过调制区域分为两部分，能实现变流器从线性区域到六脉波状态的平滑过渡，并且保证输出电流和调制比之间成线性关系。

The results show that, Au-19.25Ag-12.80Ge brazing alloy is better, its melting temperature range is 446.76494.40 ℃, and the temperature interval between the solidus and the liquidus is 47.64 ℃. When the brazing temperature is in the range of 510550 ℃, the alloy has a good spreadability and wettability with Ni. Interface structure observation reveals that there is one continuous intermetallic layer between the brazing alloy and the base metal Ni when welding. X-ray energy spectrum analysis results show that the intermetallic layer is Ge3Ni5, and because of its brittleness, the overthick intermetallic layer will decrease the shear strength of the welding joint, therefore, the welding technology should be controlled so as to gain an ideal welding interface structure.

研究结果表明：Au-19.25Ag-12.80Ge合金的性能较好，其熔化温度范围为446.76~494.40 ℃，结晶温度区间为47.64 ℃；焊接温度在510~550 ℃范围内时，Au-19.25Ag-12.80Ge钎料合金与Ni基体具有良好的铺展性和润湿性，焊接时钎料合金与Ni基体之间形成了一条连续的金属间化合物层，能谱分析表明该金属间化合物层为Ge3Ni5，由于该化合物较脆，过厚的金属间化合物层使焊接接头的剪切强度下降，故应适当控制焊接工艺以获得理想的焊接界面组织。

Gave a revaluating of long-range perspection on them in so many proven testimony; made a suggestion that there had superior metallogenic condition and favourable long-range perspection to find three Mississippi Valley Type Lead-Zinc deposits in Kezileitao-Kusilafu of West Kunlun Mountain Region.

认为塔木-卡拉牙斯卡克、阿尔巴勒克、卡兰古-卡拉塔什是西昆仑地区3个最佳的成矿远景区，在西昆仑地区至少可以找到3个大型的密西西比河谷型铅锌矿床，并为今后找矿工作指明了方向。

Based on the rapid development of Close-range photogrammetrical and laser-scanning technology, this paper presents some demerits of traditional Close-range photogrammetry, demands for the real-time photogrammetry at present, as well as the personal investigation in the theories of laser-scanning and the technologies about step-by-step generator and manipulating console.

本文针对近景摄影测量和激光扫描技术的发展，分析了传统近景摄影测量存在的问题和当前对实时摄影测量的需求，深入地研究了三维激光扫描的基本原理和实现其基本原理的关键技术。

Methods Photopic negative responses were recorded from 67 normal subjects (67 eyes) with an age range of 21 to 76 years and 41 open angle glaucoma patients (62 eyes) with an age range of 21 to 77 years.

应用美国ESPION视觉电生理仪及一次性使用的DTL微纤维电极测量67例（67眼）正常人（年龄为21~76岁）、41例（62眼）开角型青光眼患者（年龄为21~77岁）的PhNR。

Because the photospheric temperature of carbon stars are less than 3000K and the temperature of rich-dust envelope formed by the mass loss is lower, and therefore most of the energy from carbon stars are radiated between 1 to 60um range, in which the vibrational and ro-vibrational bands of many molecules also lies, the study of infrared spectra in this wavelength range is very important to reveal chemical compositions, dust formation process, the atmospheric structure and evolutionary status of stars.

碳星光球的有效温度不超过3000K，同时较大的质量损失率形成了富碳的尘埃壳层，以致于它的辐射能量主要集中在1—60μm的红外波段上，并且许多分子的转动振动能谱也集中在红外，因此在红外波段的研究对揭示碳星化学成份及其分布、尘埃形成过程、恒星大气结构和演化状态都有十分重要的意义。

The prevalence and degree of fatty muscle atrophy were evaluated with magnetic resonance imaging in the abductor digiti minimi, flexor digitorum brevis, abductor hallucis, and quadratus plantae muscles in 80 asymptomatic volunteers (mean age, 48 years; range, 23-84 years) and 80 patients with foot pain (mean age, 48 years; range, 20-86 years).

对80例无症状志愿者（平均年龄48岁，范围23-84岁）和80例足痛患者（平均年龄为48岁，范围20-86岁）小趾展肌、趾短屈肌、拇展肌和足底方肌进行磁共振成像以估计脂肪肌内萎缩的发病率和程度。

The results show that the penetration ratio decreases with increase of filtration velocity, the range of the most penetrating particle size is in the range of 0.15～0.20 μm, the effect of aerosol concentration on the filtration efficiency is ignore for monodisperse, the filtration efficiency of each step on multilayer is different from others for polydisperse.

研究结果表明：用玻璃纤维膜过滤清除气溶胶团粒时，对粒径在 0 15～ 0 。2 0 μm之间的团粒较难清除；透过率随流速的增加而增加；单分散气溶胶团粒浓度变化对过滤效率的影响可忽略不计；多级过滤时，各单级过滤效率差异受多分散气溶胶的影响较大。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。