查询词典 delta

Stability can be precisely defined in terms of the impulse response of a continuous system, or Kronecker delta response of a discrete-time system, as follows

连续系统的稳定性是根据脉冲响应精确定义的；同样，离散系统根据Kronecker 响应定义如下

When the factor to be cancelled is a base vector, we dot -multiply by another base vector to produce a kronecker delta

当要消去的因子是一个基矢量时，用另一个基矢量来点乘，以得到克罗内克尔记号。

This can be expressed by where X i and x i are undeformed and deformed positions of a point in direction i respectively,d ij denotes the Kronecker delta,and the summation convention of summing on all repeated indices is used.

E ij [15，16]。这个可以用下面的式子来表达一个点Xi和xi在各自方向上未变形的和变形的位置 dij表示克罗内克δ，使用反复连续指数的求和。

Enforcement of essential boundary conditions is awkward because the approximations do not satisfy the Kronecker delta condition in the EFGM.

无单元Galerkin方法由于其不满足克罗内克符号规则，因此处理强加边界条件比较复杂。

The present method is applied to two-dimensional potential problems and the corresponding discrete equations are derived. Because the shape functions so-obtained possess the Kronecker delta property, the essential boundary conditions can be enforced as the FEM; furthermore, the Heaviside step function is used as the test function, there is no domain integral, and only a regular boundary integral is involved.

因为滑动Kriging插值方法构造的形函数满足Kronecker函数性质，所以本文建立的改进的无网格局部Petrov-Galerkin法可以像有限元法一样直接施加边界条件；由于采用Heaviside分段函数作为局部弱形式的权函数，因此在计算刚度矩阵时只涉及边界积分，而没有区域积分。

These 2 types of depositional sand bodies are rarely seen in typical depositional modes of lacustrine delta sand bodies.

这两种类型沉积砂体在已有的典型湖成三角洲砂体模式中很少提及。

In this study, Atmospheric Research Model (MM5) and Four-dimensional data assimilation was used to simulate the land and sea breeze circulation over the Pearl River Delta Region.

利用中尺度数值模式MM5和四维同化技术相结合对珠三角地区的海陆风过程进行了模拟。

Our company is a professional granite manufacturer, mainly produces various specifications and various standards and measuring plate: angle square, feet, flat feet, surveying Block, V-block, parallel rules, such as granite box measuring, components, such as: coordinate measuring machine base, the base circuit board equipment, a variety of projector base, the company's projector to enter the base in Shenzhen and the Pearl River Delta region south by customers, U.S. Products are mainly exported to Germany, Spain and China Taiwan etc. countries and regions, and Machinery Factory Qingdao outpost set up a partnership sells its products in Japan, Germany, the test of DIN, JIS, product packaging in line with international export standards, at the same time The company has advanced production equipment, one large double-housing planer Units, bridge-type cutting machine 1 Units, Units 1 rail grinder, large CNC Drilling Units 1, 5 Units Vertical Drilling Machine, 10 tons lane 2, 5 tons lane 2 Department of 3 tons lane 2, and has 2000 square meters large thermostat workshop for high-precision measuring and cutting granite, laid the foundation meter.

我们公司是一家花岗石专业生产厂家，主要生产各种规格及各种标准的平板及量具：角尺、方尺、平尺、测量座、V 型块、平行规、方箱等花岗石量具、构件，如：三坐标测量机底座，线路板设备配套底座，各种规格的投影仪基座、本公司生产的投影仪基座打入深圳及南方珠三角地区，深受客户的好评，我们的产品主要销往德国、西班牙及中国台湾等多个国家和地区，并与青岛前哨机械厂建立了合作关系，其产品销往日本，德国，检验标准DIN、JIS，产品包装符合国际出口标准，同时本公司拥有先进的生产设备，大型龙门刨床1台、桥型切机1台、导轨磨床1台，大型数控钻1台，立式钻床5台，10吨行车2部，5吨行车2部，3吨行车2部，并拥有2000平方米的大型恒温车间，为高精度的花岗石量具、量仪奠定了基础。

Moreover, SRT exposure showed decreased activation in gamma (30-45Hz) and a lateralization of evoked delta (1 to 4 Hz).

此外，塞尔维亚广播电视台曝光显示下降激活伽玛（ 30 45Hz ）和侧诱发三角洲（ 1至4赫兹）。

The Volga river delta provides an ideal entry, leading straight to Stalingrad, the underbelly of Russia.

伏尔加三角洲是一个理想的入口，从那里可以直接进入俄罗斯的软下腹斯大林格勒。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。