级联

Cascades were calculated for various key relative molecular mass,which is the average relative molecular mass of two key components in a matched abundance ratio cascade.

在匹配丰度级联中，关键相对分子质量是两个关键组分相对分子质量的平均值。

At first,the negative data is divided into several parts accumulatively according to the geometric distribution of the training data.

该方法首先根据样本的几何分布，用迭代的方式把负样本分成若干部分与正样本线性可分的样本；然后用L-SVM对这些正负样本进行分类，得到若干个线性分类器；最后，将这些线性分类器顺次组合，构成级联分类器。

Highly charged ions ; secondary ion yield ; linear cascade collision ; potential aggradation

高电荷态离子；二次离子产额；线性级联碰撞；势能沉积

Besides, through the method of concatenation, the upper bound of algebraic immunity and the form of the annihilators of any generalized boolean function were also determined.

此外，还通过级联函数的方法确定了任意广义布尔函数的代数免疫的上界和零化子的形式。

An analytical method was developed to optimize multi-component gas separation cascades for minimum total interstage flow to reduce the cost of the separation cades.

为降低级联的建设和运行成本，使设计总流量较小，提出了一种多组分分离级联的一维解析优化方法。

The solvable Lie algebra is corresponding to a cascade decomposition of the system and the semisimple Lie algebra is corresponding to a qasi-parallel decomposition such that the system has a parallel form of a cascade decomposition and a qasi-parallel decomposition.

任一李代数都可分解为一可解李代数与一半单李代数的半直和，可解李代数对应于系统的级联分解，半单李代数对应的是系统的准平行分解，将二者合并起来，就得到一般李群下的非线性系统的结构分解，这是一级联形式与一准平行形式的并联形式分解。

Keryx is developing KRX-0401, a novel, potentially first-in-class, oral anti-cancer agent that inhibits the phosphoinositide 3-kinase (PI3K)/Akt pathway, a key signaling cascade that has been shown to induce cell growth and cell transformation.

Keryx正在开发韩国证券期货交易所，0401，一种新的，潜在的先入级，口服抗肿瘤剂，抑制磷酸肌醇3激酶（PI3K）/ AKT的途径，一种关键的信号级联反应已经显示出诱导细胞生长和细胞转化。

The deuterium enrichment in electrolysis cell will finally cause a poor deuterium extraction efficiency, and this conflict indicates that dynamic behavior of CECE is a main concern in the choice of operating mode and the connection with cascade post-enrichment sysytem, and it should be an important factor in designning catalytic exchange column.

电解池中氖浓度的增长最终将引起交换系统脱氚率的下降，这一现象表明，在交换系统操作模式选择以及与后级浓缩系统的级联匹配中，对交换系统的动态行为必须予以特别关注，并应在交换床设计中考虑此因素。

The deuterium enrichment in electrolysis cell will finally cause a poor deuterium extraction efficiency, and this conflict indicates that dynamic behavior of CECE is a main concern in the choice of operating mode and the connection with cascade post-enrichment sysytem, and it should be an important factor in designning catalytic exchange column.

电解池中氘浓度的增长最终将引起交换系统脱氘率的下降，这一现象表明，在交换系统操作模式选择以及与后级浓缩系统的级联匹配中，对交换系统的动态行为必须予以特别关注，并应在交换床设计中考虑此因素。

Low-frequency instability in a single stage PFC converter is studied, which employs a cascade configuration of a boost converter and a forward converter.

研究了由Boost 变换器和Forward变换器级联构成的单级功率因数校正(power factor correction，PFC)变换器中的低频不稳定现象。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。