查询词典 antiproton

Using the data from antiproton annihilation method, we get the ranges of the slope , curvature of the symmetry energy near the saturated densityand the symmetry energy coefficient as : L = 20 ~ 100MeV,Ksym =-256 ~ 70MeV, as = 30 ~ 35MeV.

以反质子湮灭法拟合的参考实验值作为标准，我们给出对称能系数，对称能在饱和密度附近的斜率和曲率的参考范围分别为：as = 30 ~ 35MeV ，L = 20 ~ 100MeV，Ksym =-256 ~ 70MeV。

The differential cross section, the polarisation and the spin-rotationparameter in elastic scattering of 180 MeV antiproton by 12C are calculated by means ofGlauber s multiple scattering theory and Pauli-correlated wavefunction .

在Glauber多重散射理论近似下，采用泡里关联的核波函数，使用一种唯象的湮灭势，对180MeV的在12C上的弹性散射微分截面，极化角分布和自旋旋转参数进行了计算。

The atom drifts to where it wants to go, said Dr. Landua, namely the wall where its components will annihilate with their opposite numbers in a characteristic pattern: the antiproton into a spray of lighter particles called pions, and the positron producing a flash of gamma rays.

Landua 博士说，&原子随意漂流&，即组成的墙壁会消灭以相反特性存在的粒子数：反质子进入比较轻的称作介子的粒子雾里，而正电子产生伽马射线闪光。

According to that the middle long range develops a plan, will establish the heavy ion nuclear physics step by step rolling a cluster into a ball with hadron physics , atom and molecule physics , ion irradiation living things material, and the advanced ion accelerator wait for the distinct five characteristic countries laboratory (including that the ion beam administering cancer), resisting an irradiation with high-power electron accelerator; Be that China participates in the international antiproton and the ion studies the device Big Science project scientific and technological cooperation coordination unit; The significant country "the 9th Five-Year Plan" science project "Lanzhou heavy ion cooling being completed soon stores up the ring" general

按照中长期发展规划，将逐步建成重离子核物理与强子物理、原子与分子团簇物理、离子辐照生物、抗辐照材料、以及先进的离子加速器与大功率电子加速器等五个特色鲜明的国家实验室；是中国参与国际反质子与离子研究装置大科学工程科技合作的协调单位；即将竣工的国家&九五&重大科学工程&兰州重离子冷却储存环&将作为国家重要的公共研究平台对国内外开放。

Although the Tevatron produces many orders of magnitude more hadrons than do the machines at KEK and SLAC, it is nevertheless much harder to study the decay of B mesons in proton-antiproton collisions.

虽然Tevatron能比KEK和SLAC的加速器产生多许多个数量级的强子，但是在正负质子的碰撞中研究B介子的衰变仍是非常困难的。

Fermilab has added the two-mile Main Injector accelerator to increase the number of proton-antiproton collisions in the Tevatron, greatly enhancing the chances for important discoveries in Run II.

费米实验室增加了两英里长的主要喷油加速器增加质子反质子碰撞的Tevatron ，大大增强了机会，重要的发现在运行二。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。