查询词典 fast neutrons

Unlike the constituents of living organisms, fossil fuels contain little or none of the radioactive form of carbon: the carbon 14 isotope, which has eight neutrons in the nucleus rather than the usual six.

和生物体组成不同的是，化石燃料的放射性同位素碳14（原子核内有8个中子，一般碳原子只有6个）含量非常低，有些甚至没有。

1913 IsotopeOne of two or more atoms that have the same atomic number, but a different number of neutrons, Coined by Frederick Soddy.

同位素是指原子序数相同中子数不同的元素。这个词是由弗雷德里。索蒂（1877－1956，英国化学家，1921年获诺贝尔奖金）创造的。

Never saw anything clos ing in now.., fast...fast.., never saw anything so fast.

现在它正在接近，太快了，太快了，从来没有见过任何东西这么快。

Reporter of dispatch of new wall bulletin learns from company of Shenzhen fast thunder, american film society is aimed at case of litigation of tort of fast thunder company, nolle prosequi actively with MPA eventually and end, company of immediately fast thunder already raised to be aimed at the countercharge bring a case to court of MPA respect.

新快报讯记者从深圳迅雷公司获悉，美国电影协会针对迅雷公司侵权诉讼案，终于以MPA主动撤诉而告终，随即迅雷公司则已提起了针对MPA方面的反诉讼。

The article mainly elaborated the reaction principal of biomass fast pyrolysis, gave a brief introduction of transport system select of biomass fast pyrolysis in the foundation of the technical process of biomass fast pyrolysis, which laid a foundation for the project popularization and actual application.

阐述了现有的生物质热裂解反应原理，并在生物质热解液化过程工艺的基础上对生物质热解液化装置输送系统的选用和设计做简要介绍，以解决生物燃油制备过程中物料的输送问题，为该项技术能够推广和实际应用奠定了基础。

In this paper we combined three chromatographic separation and purification technique such as affinity chromatography, ion exchanger chromatography and hydrophobic interaction chromatography to develope a new technology of stimutaneous extraction of three enzyme from pancreatin. We optimized the technology by studying the methods of purification and assured the technology as: The crude extraction from the dissolution of Pancreatin is directly absorbed on the DEAE gelose fast flow columnEquilibrating buffer is 0.01mol/L NaoAc-HoAc buffer(pH4.5; eluting buffer is 0.2～0.35mol/LNaCl in 0.01mol/LNaoAc-HoAc buffer (pH4.5), and then be eluted by two steps to acquire the peak of kallikrein.The solution which can"t be adsorbed by DEAE gelose fast flow column is adsorbed on affinity chromatographic column Equilibrating buffer is 0.01mol/LTris-HCl buffer(pH7.5, eluting buffer is 0.5mol/LNaCl in 0.01mol/Ltris-HCl buffer(pH7.5)and then be eluted by one step to acquire the peak of trypsin.The solution which can"t be adsorbed by is pretreated with 30%～80%(NH_4)_2SO_4 fractional precipitation, the deposition of the precipitation is dissolved to beabsorbed on phenyl gelose fast flow columnhydrophobic interaction chromatography condition is Equilibrating buffer is lmol/L(NH_4_2SO_4 in 0.01mol/LNaoAc-HoAc buffer(pH4.5), eluting buffer is 0～0.6mol/L(NH_4)_2SO_4 in 0.01mol/LNaoAc-HoAc buffer (pH4.5) and then be eluted by two steps to acquire the peak of chymotrypsin.

本研究考察了各种纯化方法，将离子交换层析、亲和层析和疏水层析三种分离纯化法相结合，建立了激肽释放酶、胰蛋白酶和糜蛋白酶三酶的联产工艺：胰酶用pH4.5醋酸缓冲溶液提取后，粗提液直接上DEAE-琼脂糖快胶柱吸附平衡缓冲液：0.01mol／LNaoAc-HoAc缓冲液(pH4.5，洗脱缓冲液：0.01mol／LNaoAc-HoAc缓冲液(pH4.5)含0.2～0.35mol／LNaCl分两步洗脱，收集激肽释放酶的洗脱峰；DEAE-琼脂糖快胶的未吸附液上亲和层析柱分批吸附平衡缓冲液：0.01mol／LTris-HCl缓冲液(pH7.5，洗脱液：0.5mol／LNaCl溶液，一次洗脱，收集胰蛋白酶洗脱峰；最后，亲和层析未吸附液用30％～80％硫酸铵分级盐析处理，沉淀溶解后用上苯基—琼脂糖快胶吸附平衡缓冲液：0.01mol／LNaAc-HAc缓冲液(pH4.5含1mol／L(NH_4)_2SO_4，洗脱缓冲液：0.01mol／LNaAc-HAc缓冲液(pH4.5)含0～0.6mol／L(NH_4)_2SO_4，分两步洗脱，收集糜蛋白酶的洗脱峰。

Her language fast very fast, no matter be to say Chinese or English, always very can fast contact topic and the thing that you are familiar with, her enthusiastic very rich appeal, you can become in spite of oneself very familiar with her, without the distance.

她的语速很快，无论是说中文还是英文，总能很快把话题和你所熟悉的东西联系起来，她的热情很富有感染力，你会不由自主地和她变得很熟悉、没有距离。

The research of both theories and practices of gridding in the dissertation shows that: Linear interpolation based on triangulation is simple computationally and fast, but its gridding results isn't smooth and its precision is low; Multiquardric method is also simple computationally with high precision and good effect, but its gridding is slow because it is based on global calculation; Minimum curvature method is fast with high precision and good effect, but its gridding quickly degrades over areas with sparse data control when grid spacing smaller than the actual grid spacing is used; Ordinary Kriging method is high-precision, but its gridding is slow because of large calculation; Inverse interpolation is a computationally fast, efficient and robust method with high accuracy and perfect effect, and its gridding results of different gridding orientations are basically identical. Inverse interpolation is suitable for thegridding of geophysical irregular data, especially for large-scale geophysical irregular data.

本文的方法研究和数据试验分析表明：基于三角网的线性插值法计算简单，速度快，但其网格化结果不光滑，精度不够；多元二次函数法计算简单，网格化精度高，效果良好，但它是基于全局计算的，计算速度较慢；最小曲率法计算速度快，网格化精度高，效果良好，但其在稀疏控制点的网格化容易出现振荡现象；普通克里格法网格化精度高，效果良好，但其计算量较大，一般计算速度慢；反插值法网格化计算稳定，速度快，精度高，效果好，而且在网格化方向不同的情况下其网格化精度效果都达到基本一致，适合于地球物理不规则分布数据的网格化，特别是大规模地球物理不规则分布数据的网格化。

The true Lenten fast is a fast from sin and selfishness and this finds expression in a fast from food and drink.

四旬期的真正禁食是禁止自己接触罪和自私，而此行为反映在禁食上。

The buffered-crossbar switch architecture is studied. In this paper, the maximum weight fast algorithm is used in BX, we discover the null row phenomenon in BX's maximum weight fast algorithms, and propose a doubling weight solution for null row, this promotes the performance of maximum weight fast algorithms in BX.

对缓冲Crossbar交换结构进行了研究，论文中将最大权重优先算法应用于BX结构，并对其在BX结构由于存在空列现象所导致的性能恶化提出了空列权重加倍的解决方案，提高了最大权重优先算法在不均衡负载下的性能。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。