筛选

Through step-by-step selection of 20 financial indicators, it is found that net interest rate of total assets, assets-liabilities ratio, and accounts receivables turnover are effective predictors of financial failure at listed companies; overall, the model has an accuracy rate of 86.7% in prediction.

经过对20个财务指标的逐步筛选，实证结果发现，总资产净利率、资产负债率和应收账款周转率对上市公司财务失败具有显著的预测作用；模型的总体预测准确率为86.7%。

This strain was deposited in China General Microbiogical Culture Collection Center, named Bacillus subtilis NX-2 with the accession number of CGMCC No. 0833. Assimilability to carbon source by NX-2 was unique.

本论文主要工作如下：以L-谷氨酸分离培养基为特定的"筛子"，通过大量的筛选和工作，获得了一株高产γ-PGA的菌株枯草芽孢杆菌N X-2。

This is the phase you go through when you grow by a process of sifting, digestion, and assimilation

这是你通过对作品的筛选、消化和吸收，逐步成长的过程

Coli . The clones were verified by restriction enzyme digestion and PCR. Sequence and homology analyses showed that this phytoplasma strain shares high homology (99.0%) with the phytoplasma of Aster Yellows that belongs to 16SrI group.

通过酶切、PCR鉴定，对筛选得到的重组阳性克隆进行核酸序列测定及同源性比较分析，结果表明其与植原体16SrⅠ组中的西方翠菊黄化植原体同源率为99%。

After establishing a port binding between a tuple and a tuple, a cone NAT will re-use this port binding for subsequent sessions the application may initiate from the same private IP address and port number, for as long as at least one session using the port binding remains active.

请看以下图形，终端和外部服务器，都通过NAT分派的这个绑定地址对来传送信息，就象一个漏斗一样，筛选并传递信息

On the foundation of regeneration system for alfalfa tissue culture, the salt-tolerance gene Atriplex dimorphostegia NHX was transferred into alfalfa by Agrobacterium- mediated transformation.

2农杆菌介导犁苞滨藜NHX的苜蓿遗传转化体系在愈伤组织诱导阶段加入卡那霉素对愈伤组织的再生有抑制作用，延迟15天进行抗性愈伤组织的筛选，可提高转化效率。

The common method, that all strong-correlation terms of the model are eliminated, can bring the loss in the engineering application, so the new method is proposed that the identified model reserves some correlation. The augmented matrix A is constructed by the outputΔW and the matrix S. The"determinating order based on ratio of determinant"is brought out to screen the strong-correlation terms in the structure identification. The latent root estimation is improved in screening the eigenvalues and eigenvectors. Thus the estimation precision is improved greatly.The consistence check of guidance instrument error coefficients of flight test and ground test is the purpose of flight experiment. The causes of inconsistency of the two models are analyzed. The hypothesis test of linear regression model based on F statistics is proposed to check the consistence.Finally, the instability of error coefficients is probably caused by the change of the flight environments, therefore, the relation between the error coefficients and flight environment is analyzed. The approach is presented to identify SINS guidance instrument error models and compensate the error in the segmented sections corresponding to the change of vertical acceleration of aircraft.

在结构辨识中，常用的方法由于将模型中的强相关项全部剔除而给工程应用带来损失，因此，本文提出了新的有益思想，即在保留一定相关性的基础上进行辨识：将输出向量ΔW与环境函数矩阵S构成增广矩阵A，然后采用"比定阶行列式"来剔除相关向量的方法，这样既可以尽可能多地保留了对落点影响大的强相关参数，又可以对落点影响小的强相关参数给予剔除；在参数估计中，改进了特征根估计中特征根和特征向量的筛选方法，提出"近零"准则，从而大大提高了参数估计的精度；再者，鉴于天地模型"一致性"检验是飞行试验和SINS制导工具误差系数分离的主要目的，因此，本文又深入分析了造成天地模型不一致的原因，提出了采用基于F统计的线性回归模型假设检验方法来进行捷联制导工具误差模型的天地"一致性"检验；最后，鉴于飞行环境剧烈变化可能会对惯性仪表误差系数稳定性带来一定的影响，因此本文深入地分析了SINS制导工具误差系数与外界环境的关系，提出了基于过载变化大小的分段辨识和分段实时补偿的算法。

Preparation of monoclonal antibody to human augmenter of liver regeneration : screening of hybridomas with unpurified antigen expressed by E coli .

人肝再生增强因子单克隆抗体的制备：以非纯化的大肠杆菌表达抗原筛选杂交瘤。

In connection with two major difficulty points of high antisepsis and difficult degradation of the aureomycin wastewater, the fungi had been screened to degrade aureomycin effectively.

针对金霉素废水的高抗菌性和难降解性两大难点，筛选出高效的金霉素降解菌，并以此为基础，研究在共基质条件下该菌株的生长及其降解金霉素的特性，确定促进金霉素降解的最佳条件，为金霉素生产废水的生物处理提供必要的理论依据。

To screen the strains with high production of laccase from A. Auricula so that the properties and gene expression of A. Auricula laccase as well as its structures and functions can be studied.

为筛选黑木耳漆酶高产菌株以便对黑木耳漆酶酶学性质、基因表达及结构与功能进行研究，从河南省农业科学研究院、河南省生物研究所购得黑木耳菌株10株。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。