传播子,propagator
1)propagator[英]["pr?p?,geit?][美]["prɑp?,get?]传播子
1.Semi-classical Propagator and van Vleck Determinant in a Mixed Position-momentum Space;混合位置-动量空间的半经典传播子与van Vleck行列式
2.The author generalized thepropagator function theory introduced first by Sigmund, and gave a explicitly proof of a equivalence between forward and backward Boltzmann Equations in a multi-component medium by using the generalizedpropagator function theory.推广了 Sigmund所引入的传播子函数理论 ,并以其为工具 ,简单明晰地证明了多组分介质向前和向后 Boltzmann方程的等效性。
3.In this note,we calculated thepropagator for a classical particle and a microscopic particle,respectively.用量子力学传播子讨论了经典粒子和量子微观粒子沿着不同轨道对传播子的贡献 。
英文短句/例句
1.Quark Propagator, QCD Vacuum Condensates and Quark Virtuality;夸克传播子、QCD真空凝聚和夸克虚度
2.To scatter widely, as in sowing seed.传播，散布，如种子
3.Mosquitoes are carriers of malaria.蚊子是疟疾的传播媒介.
4.Certain mosquitoes transmit malaria.某些蚊子传播疟疾。
5.On the Model of Literary and Artistic Communication in the Electronics Media Context;电子传媒语境中的文艺传播模式研究
6.On the New Functions of Educational Dissemination and Transformation of Dissemination of Imperial College in Song Dynasty;论宋代国子监教育传播的新特征和传播职能的转变
7.mosquito that transmits yellow fever and dengue.传播黄热病和登革热的蚊子。
8.The seeds, although winged, do not become wind-borne.其种子虽然有翅，也不能形成风力传播。
9.the theory that light is transmitted as a stream of particles.光以粒子流动而传播的理论。
10.a concentrated stream of particles or a similar propagation of waves.粒子聚流或以类似方式传播的波。
11.marked by pain in muscles and joints and transmitted by lice.肌肉或关节疼痛并且由于虱子传播。
12.Dandelions seed themselves.蒲公英可以自己传播种子。
13.Malaria is a disease that mosquitoes carry.疟疾是蚊子传播的一种疾
14.The virus is carried by insects called mosquitoes.该病毒由蚊子这种昆虫携带和传播。
15.caused by a virus transmitted by a mosquito.由蚊子传播的病毒而引起的一种病。
16.Fruit consumption and seed dispersal of wild banana Musa acuminata by short-nosed fruit bat Cynopterus sphinx犬蝠对小果野芭蕉的取食及种子传播
17.FDTD Stimulation of Light Transmission in Photonic Crystals;FDTD模拟光波在二维光子晶体中的传播
18.Transmission Characteristics of 2D Wave Photonic Crystal Straight Guide;二维光子晶体直波导传播特性的研究
相关短句/例句
mother_to_child transmission母子传播
1.Objective:The aim of this study was to investigatemother_to_child transmission of Mutans streptococci in Shenyang area of China.目的 :研究中国沈阳地区儿童变形链球菌群细菌 (Mutansstreptococci,MS)的母子传播情况。
3)chain propagator链传播子
4)seed dispersal种子传播
1.In genus Pinus,there are approximately 110 species which can be classified into two groups according to the modes of theirseed dispersal,i.松属植物约110种,根据种子传播方式可分为风传播松和动物传播松。
2.To expedite the recovery of secondary forests on such abandoned fields, the seed bank needs to be supplemented by direct seeding, enrichment planting of desired species and installing artificial perches for facilitatingseed dispersal.为了加快这些废弃地次生林的恢复,既要依靠自然集成的土壤种子库,还需要通过直播、所需物种的强化种植和设定人工生长环境以利于种子传播。
3.hunanensis crown,and to help theseed dispersal by rejecting the drupes stone after ingestion.发芽试验显示,湘楠种子的萌发并不依赖于鸟类消化道的处理,但鸟类呕出种子的早期出苗率较高,且鸟类可以在较大空间范围内将其种子传播至一些适宜于种子萌发及幼苗定居的生境中。
5)propagator[英]["pr?p?,geit?][美]["prɑp?,get?]传播因子
1.In an effect to tackle the problem of the performance deteriorates at low SNR and the high computational complexity in- duced by sensor array processing,beamspacepropagator method based on Schur-Hadamard product for joint parameter estimation of co- herently distributed source is proposed.针对分布式信源阵元域参数估计算法在低信噪比时性能下降、计算量大的问题,提出了基于Schur-Hadamard积波束域传播因子的分布式信源参数联合估计算法。
6)propagator method传播算子
1.Instead of eigen-decomposition,thepropagator method is applied to generate rotational invariance matrix,and the elevation angle estimation is derived from the estimated azimuth angle.针对目前用旋转不变空间技术(ESPRIT)估计2-D DOA时存在计算量大和需要二维参数配对的问题,提出了把传播算子原理引入ESPRIT算法的新方法,用线性变换代替特征分解求取旋转不变关系矩阵,并且利用估计出的方位角估计俯仰角,大大提高了计算速度,实现了方位角和俯仰角的自动配对。
2.Based on thepropagator method (PM), a novel approach of combining frequency and direction-of-arrival(DOA) estimation in array processing is proposed in this paper.提出了一种基于传播算子的波达方向、频率快速联合估计方法,该算法不需要估计阵列接收信号的高维空、时协方差矩阵及其相应的奇异值或特征分解,具有更低的运算复杂度,算法能适合于非均匀阵列结构且估计出的空时参数能自动配对。
延伸阅读
(-)-表没食子儿茶素没食子酸酯分子式：C22H18O11分子量：458.38CAS号：989-51-5性质：
