查询词典 rational expression

Due to historical reasons, note that the alternate VarAdd syntax listed above matches neither the syntax for variable assignment within an expression, nor the syntax for variable addition within an expression.

由于历史原因，注意上面列出的VarAdd可代替语法既不能将变量赋值用于表达式内，也不能将变量加用于表达式内。

The first assignment successfully converts the lambda expression to the delegate type Func because, when x is given type int, x+1 is a valid expression that is implicitly convertible to type int.

第一个赋值成功地转换 lambda 表达式到 delegate 类型 Func ，是因为当 x 是 int 型， x+1 是一个有效的表达式并可以隐式地转换到类型 int 。

That is, precedence and associativity determine which part of the expression is the operand for each of the operators in the expression.

也就是说，优先级和结合性决定了表达式的哪个部分用作哪个操作符的操作数。

Unfortunately, it has been shownthat these methods are not suitable to study about chemical bonds due to not involvingchemical bonds. In order to consider chemical bonds obviously, we have proposed an atom-bondelectronegativity equalization model on the basis of density-functionaltheory and electronegativity equalization principle. The main contents of our atom-bond electronegativity equalization model contain:(1)Considering the fact that there are varies of chemical bonds in molecules andpartitioning the molecular electron density as summations of atomic electron densitiesand chemical bond's electron densities, we obtained the basic equations of atom-bondelectronegativity equalization model: the expression of the total energy 〓, theexpression of the atom electronegativity 〓 and the expression of the bondelectronegativity 〓.

为了明确地考虑和处理分子中存在的化学键，以便能够更好地描述体系中的电荷分布进而准确地描述分子体系中的有关物理化学性质，尤其是与化学键有关的物理化学性质，我们在密度泛函理论和电负性均衡原理基础上提出了原子-键电负性均衡模型，原子-键电负性均衡模型的主要内容是：(1)考虑到分子体系中存在各种化学键这个事实，将分子空间看成是由原子区和化学键区组成的，将分子的单电子密度表达成为分子中各组成原子的单电子密度和各化学键的单电子密度的加和，从而得到了原子-键电负性均衡模型的基本方程：分子体系总能量〓和分子中原子电负性〓和化学键电负性〓表达式。

To study the expression, purification and bioactivity of human augmenter of liver regeneration in Pichia Pastoris, the expression plasmid pPICZαA- ALR was constructed and transformed into P. Pastoris by the method of electroporation transformation. Induced with 0.5% methanol, the 30 kD protein in the culture supernatant of recombinant P. Pastoris was confirmed to be rhALR by SDS-PAGE and Western blot. Quantitative analysis showed that the target protein was in a level of 66% of the total protein of the culture supernatant, with a yield of 40mg/L.we had performed DEAE anion exchange chromatography two times with excessive and regular adsorption quantity consecutively, and then the rhALR above 95% purity and 52% protein recovery could be obtained by G75 molecular sieve chromatography at last step. The bioactivity assay of the purified product showed that rhALR could stimulate the proliferation of HepG2, SMMC-7721 and NIH-3T3 in vitro.

为在毕赤酵母中分泌表达人肝再生增强因子，以色谱法分离纯化后进行体外活性研究，构建表达载体pPICZαA- ALR，经电穿孔转入毕赤酵母中，用0.5％甲醇诱导表达；重组酵母培养上清经SDS-PAGE电泳和western blot鉴定后表明， rhALR以分子量为30kD的二聚体为主；定量分析结果表明，重组酵母培养上清中rhALR约占总蛋白的66％，表达量约为40mg/L；经DEAE柱和G75柱纯化后，获得的rhALR纯度大于95％，得率为52％；体外生物学活性实验表明，rhALR能明显促进HepG2、SMMC-7721和NIH-3T3细胞的增殖。

According to these characters mentioned above,we conclude that ARVD is a autosome dominant heredity disease,And according to clinical expression of this disease,we classify these clinical expression to four type:①Arrhythmogenic type.

该病为常染色体显性遗传，可分为心律失常、右心衰竭、伴有左心病变及无临床症状四型。

In the present study, we examined the large-scale gene expression profiles with six sets of matched clinical and experimental fluconazole susceptible and resistant C. albicans strains by microarray analysis. We observed that azole resistances developed in multiple circumstances are all associated with increased expression of CDR mRNA. We also identified some common differential expressed genes and some interesting function-linked gene groups involved in drug-resistance.

利用所构建的基因芯片我们研究了共六对氟康唑敏感和耐药白念珠菌配对菌株的大规模基因表达谱，证实不同环境下产生的白念珠菌耐药性均与多药耐药基因CDR的mRNA表达增加有关，并从中鉴定了一些与药物耐受性相关的共同差异表达基因和一些有趣的功能连锁基因群。

And according the results of the fluconazole sensitivity, differential expression level of CDR1 mRNA was showed on the candida albicans azole resistance and sensitive isolates, we want to discover the molecular mechanism of CDR1 expression regulation by detecting whether there were the mutations on the upper stream of the CDR1 gene.

CDR1基因在白念珠菌唑类耐药/敏感菌株中的表达情况观察，对念珠菌的mRNA进行NORTHERN BLOT检查，发现唑类耐药株与敏感株在CDR1基因表达上存在显著差异。3。

And according the results of the fluconazole sensitivity, differential expression level of CDRl mRNA was showed on the Candida albicans azole resistance and sensitive isolates, we want to discover the molecular mechanism of CDRl expression regulation by detecting whether there were the mutations on the upper stream of the CDRl gene.

CDRI基因在白念珠菌哇类耐药／敏感菌株中的表达情况观察，对念珠菌的mRNA进行NORTHERN BLOT检查，发现哇类耐药株与敏感株在CDRI基因表达上存在显著差异。3。

As a result this gene is mixed in new student and grown bandicoot there is taller expression in the pallium of small rat and spinal cord, expression is spent in having in lung.

结果该基因在新生和成年大鼠和小鼠的大脑皮层和脊髓中有较高的表达，在肺中有中度表达。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。