查询词典 keep one's distance

It is shown that in the small distance region of the bar-LD the intensity distribution of the bar-LD is constructed by separate beam spots emitted from each emitter. As the distance of the observation point from the bar-LD increases, the beam spots of the emitters begin to overlap, and even to form a flattop distribution in a large distance region.

结果表明，在距发光面较近处，各emitter辐射的光斑呈分离状；随着距离增加，各光斑开始交叠，甚至出现平顶；当距离足够远，bar型半导体激光器的远场光斑与单个emitter的辐射光斑几乎没有差异。

Some issues in recording and reconstruction of near distance digital holography are discussed where the recording distance is shorter than the Fresnel diffraction distance.

讨论了记录距离小于菲涅耳衍射要求的近距离数字全息记录和再现问题。

This paper gives a mathematical definition to that two open planar curves have the same shape based on curvature representation, therefore, a new kind of shape distance is proposed. It is concluded that the problem of computing the shape distance between two open planar curves can be changed to the problem of a functional extremum, and the differential equation is given, which can be used to figure out the shape distance.

本文为基于曲率表示的两条平面开曲线的等形下了严格的数学定义，从而找到了一种新的形状距离度量，并且证明了这种形状距离的计算问题可以转化为一个泛函的极值问题，同时给出了求解形状距离的微分方程。

When the generator polynomial of a given linear rank distance code possesses generalized continuous roots set, the sufficient condition that makes the given linear rank distance code forming rank distance BCH code is discussed.

他们指出当线性秩距离码的生成多项式的根集不是连续根集时，确定秩距离码的最小秩距离以及构做极大秩距离码是未解决的问题。

Habitat selection of goral was mainly influenced by distance to human disturbance, altitude, distance to forest edge, distance to water source, slope position, shrub canopy cover, shrub height, level of concealment, slope aspect and wind direction.

因子分析表明，影响矮岩羊生境选择的主要因子为人为干扰距离、海拔高度、林缘距离、水源距离、灌丛高度、隐蔽级、风级和动物干扰距离等生境因子，而影响斑羚生境选择的主要因子为人为干扰距离、海拔高度、林缘距离、水源距离、坡位、灌丛盖度、灌丛高度、隐蔽级、坡向和风向生境因子。

Applying combined method of quantitative analysis and qualitative analysis, on the basis of on ago research fruit, this paper firstly analyses main factors that affect the safe distance from friendly force to target for tank gun overhead firing systemically. Based on that, this paper builds math model of calculating the safe distance from friendly force to target separately aiming to the difference of tank gun overhead firing in plane and undulate terrain. At last, through applying Mathematica soft, this paper presents the safe distance from friendly force to target for a tank gun overhead firing used APFSDS, HEAT and HESH, combined qualitative analysis.

采用定量分析和定性分析相结合的方法，在以往研究成果的基础上，首先系统地分析并提出了影响坦克炮超越射击时友军至目标安全距离的主要因素；以此为基础，针对平坦地形和起伏地形上坦克炮超越射击的不同情况，分别建立了确定友军至目标安全距离的数学模型；最后通过运用Mathematica软件进行定量计算，并结合定性分析，提出了某型坦克炮使用尾翼稳定脱壳穿甲弹、空心装药破甲弹和杀伤爆破榴弹进行超越射击时友军至目标的安全距离。

On the 3 rd day after operation, compared with group C, the latency period and swimming distance of group O, group Hup extended further, while compared with group O,the latency period and swimming distance of group Hup shortened (P.05);Compared with group C, the extending degree of the latency period and swimming distance of group O decreased on the 7 th day after operation.

结果 术后1 d进行水迷宫测试，与C组比较，A组、O组潜伏期和游泳距离均延长(P.05)；术后3 d，与C组比较，O组、Hup组潜伏期和游泳距离进一步延长，而Hup组与O组比较，潜伏期和游泳距离均缩短(P.05)；术后7 d，O组与C组比较，潜伏期和游泳距离延长程度缩小。

The metrics include patch density, largest patch index, edge density, area-weighted shape index distribution, area- weighted fractal index distribution, mean Euclidean nearest neighbor distance dlstributlon,standard deviation of Euclidean nearest neighbor distance distribution, coefficients of variation of Euclidean nearest neighbor distance distribution, contagion, interspersion and juxtaposition index, cohesion, Shannon's diversity index and Simpson's diversity index.

根据生态区划计算描述中国陆地景观结构的13种景观结构指数，包括斑块密度、最大斑块指数、边界密度、面积加权斑块形状指数、面积加权斑块分维度、平均最近斑块距离、最近斑块距离的标准差、最近斑块距离的相异系数、蔓延度、分布邻接指数、结合度、香农多样性指数、辛普森多样性指数。

The author provides a solution based on added-on restraint zone to the problem of TA saturation. The distance protection is another important content. The thesis compares the relays based on operation equation with relays based on distance measuring. And then puts forward some viewpoints in changeable characteristics Mho relay, grounding fault distance relay, delta-Z relay and the power system swing and protection blocking.

距离保护是本项目的另一个重要内容，论文对常用的动作方程式与测距式距离继电器作了分析对比，对可变姆欧特性距离继电器、接地距离继电器、工频变化量距离继电器的性能、距离保护的振荡闭锁问题谈了一些看法，确定了装置距离保护的若干关键因素。

The results indicate that the improved grey target could meet the invariance of effect samples after nonsingular linear transformation caused by clout distance; the weighted Mahalanobis distance is just the weighted Euclidean distance when there is no correlation among observed indexes, which avoids correlation of decision indexes, influences of different dimension and differences of importance on effect of decisions, and the incompatibility of grey target transformation.

结果表明，改进后的灰靶满足：靶心距对效果样本作非奇异线性变换的不变性；当观测指标间不存在相关性时，加权马氏距离就是加权欧氏距离。避免了决策指标间的相关性、不同量纲和重要性差异对决策效果的影响以及灰靶变换的不相容问题。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48