查询词典 fission

In pre-equilibrium fission fields, n＋~(238)U and p＋~(208)Pb reactions are studied by numerical solution of Smoluchowski equation, and their results can be extended to the fission reactions of those nuclei in actinium and sub-actinium family.

关于预平衡裂变，主要通过数值解Smoluchowski方程，对两个典型核反应n＋~(238)U和p＋~(208)pb的裂变过程进行了研究，并把结论推广到锕系核和重核的情况。

The discovery of the artificial radioactivity pulled the prelude of nuclear fission. The Joliot- Curie couple played an important role in the discovery of nuclear fission.

人工放射性的发现拉开了核裂变发现的序幕，约里奥-居里在核裂变发现过程中也起到了重要的作用。

The nuclear reactions in the initial study, the discovery of the neutron in 1932 and in 1934 the synthesis of artificial radionuclides is a representative The results of .40 before and after the age of nuclear physics has entered a phase of great development .1939, the Hahn and Strassman found that the phenomenon of nuclear fission in 1942, Fermi established the first fission chain reactor, which is human with nuclear energy start.

在初期的核反应研究中，1932年中子的发现和1934年人工放射性核素的合成是具有代表性的成果。40年代前后，核物理进入一个大发展阶段。1939年，哈恩和斯特拉斯曼发现核裂变现象，1942年，费米建立了第一个链式裂变反应堆，这是人类掌握核能源的开端。

The method needs several parameters, such as average fission yields of fission products, correction for reaction, decay correction for radlioactive fission products in reactor, average fission energies of fissionable nuclides and so on.

它需要若干参数，如裂变产物的平均裂变产额，反应的修正量，放射性裂变产物的堆内衰变修正量，可裂变核素的平均裂变能量等。

When the hydrogen bomb, the fusion reaction caused by a large number of high-energy neutron fission of uranium in the shell, release of energy and fission neutrons, fission and fusion neutron part of charging the lithium--6 nuclear event of a nuclear reaction Tritium, tritium and deuterium occurs again further fusion reactions.

当氢弹爆炸时，聚变反应产生的大量高能中子引起壳体中铀核裂变，放出能量和裂变中子，裂变中子有一部分与聚变装料中的锂－6核发生核反应产生氚，氚又与氘发生进一步的聚变反应。

When culture condition was changed abruptly from LES medium to RPMI-1640 medium, different reproductive mode including binary fission, ternary fission,multiple fission and gemmation were found after growth retardation of 24 ～ 72 hours. This phenomenon continued less than 24 hours and binary fission remained reproductive mode then.

当从LES培养基突然变为RPMI-1640培养基时，人芽囊原虫出现短时间(48～72h)内生长停滞，随后出现多种形式的繁殖方式，可见较多的二分裂、出芽生殖、三分裂、多分裂、裂体生殖，持续24h后恢复为二分裂为主。

The samples were smeared on slides and stained with Giemsas stain. The stained smears were observed microscopically and photographed. It showed that except typical trophozoites in binary fission. the following trophozoites of abnormal morphs were also observed. for instance abnormal trophozoites with binary fission; enlarged trophozoites with round and irregular shaped eosinophilic bodies in the cell plasma; enlarged cells containing round and irregular shaped eosinophilic bodies and flagella; enlarged cells which contain 6 or 8 nuclear-like bodies and flagella, 3 or 4 embryonic forms of daughter trophozoite in one mother trophozoite; 4 trophozoite embryonic forms with fused plasma 3 trophozoites with fused plasma;4 trophozoites with fused plasma; a pair of trophozoite with binary fission fused with another trophozoite;2 pairs of trophozoite with binary fission fused each other; a trophozoite with 1 nuclear only.

结果 除观察到典型的营二分裂法繁殖的贾第虫滋养体外，还可见到多种形态异常的虫体，包括；虫体呈非典型二分裂；滋养体胀大，胞质中有团块状和不规则形状的嗜酸性物质；在胀大的贾第虫细胞内含有团块状和不规则形状的嗜酸性物质以及鞭毛；在胀大的贾第虫细胞内含有6或8个核状物以及鞭毛；在一个母体细胞中含有3或4个子体细胞的雏形；胞质互相融合的4个滋养体的雏形；胞质互相触合的3个滋养体，胞质互相融合的4个滋养体；1对营二分裂的滋养体与另一个滋养休互相融合；2对营二分裂的滋养体互相融合；仅有1个细胞核的滋养体。

In model organism fission yeast,Schizosaccharomyces pombe,100-200 rDNA gene copies are located on both left and right ends of chromosomeⅢ.The integrity of rDNA is critical for cell growth and survival.

在模式生物裂殖酵母(fission yeast，Schizosaccharomyces pombe)基因组中，100-200拷贝的rDNA基因分布在Ⅲ号染色体左右两端的末端附近。rDNA区的完整性对于细胞生长和存活是至关重要的。

Fission A type of asexual reproduction in which a parent cell divides into two daughter cells genetically identical to the parent. Binary fission occurs in many unicellular organisms, such as protoctists, bacteria, and fission yeasts.

裂殖：无性生殖的一种类型，指一个母细胞分裂成两个与母细胞相同的子细胞，二分裂发生在许多单细胞有机体中，如原生生物、细菌和裂殖酵母。

Alternative layers of target material 〓 are irradiated with (47.5 MeV/u)〓 ions, the ternary fission events of hot nuclei are verified and the probabilityratioes of ternary fission relative to binary fission with projectile energy from25Mev/u to 47.5MeV/u are measured and reprodurced with calculation result ofstatistical cascade fission model program written by myself. The fact that ternaryfission at low excitation energy come from cascade fission is shown.

5MeV／u〓束轰击Bi靶时，用叠层靶技术，实验证明了热核三分裂变确实存在，并测量了25MeV／u～47.5MeV／u 〓三分裂变相对于二分裂的三二比的激发曲线，利用自编级联统计模型程序，模拟了低温热核的三分裂相对于二分裂的几率，结果也表明在较低激发时热核三分裂是级联三分裂。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了