查询词典 four-letter

A 717 base pairs long artificial gene fragment of PrV gE has been synthesized by using preferred codons in the highly expressed Pichia genes. Four groups of oligonucleotides were successively cloned in pMD18-T vector to obtain four large fragments.

通过人工合成基因的方法对编码gE蛋白的第29～268位氨基酸残基的核苷酸序列（717bp）进行改造，用P.pastoris高表达蛋白偏爱的密码子替换原有的核苷酸序列，氨基酸序列保持不变。

Chapter four uses Autoregressive Distributed Lagapproach to examine the extent to which changes in exchange rates result in changes in CPI , which is the proxy of Chinese domestic inflation. It also analyzes the impact of food price on exchange rate pass-through effect. Then, chapter four uses Vector Autoregression model to examine the short term and dynamic effect of exchange rate pass-through. The above empirical results reveal that the exchange rate pass-through effect to domestic prices is incomplete and time-lagged.

然后，本文运用自回归分布滞后模型研究人民币汇率变动对以消费者价格指数衡量的国内通货膨胀的传递效应，并结合中国实际考察了食品价格冲击对汇率传递效应的影响；本文通过将名义有效汇率和价格等宏观经济因素纳入同一个VAR系统中，利用脉冲响应函数与方差分解技术来考察名义有效汇率变动冲击对国内价格水平的短期动态影响。

Instead of using a single term vector as event representation, the terms into four semantic classes are split(names, temporal expressions, spatial terms and contents) according to the semantic diffirence of them, form four vector spaces, and process and weigh the classes separately.

该方法没有使用传统向量空间模型中的单个向量，而是按照语义将特征词划分为4个组（人物，时间，地点，内容）并形成4个向量空间，每个空间进行独立的权重计算和相似度计算。

Four open four-color machine and its two supporting after the Road processing machinery and the management of a group of elite professionals!

四开四色机两台及其配套的后道加工机械和一批精锐的管理人才！

As the single well with 4 openings, the Well was named as Four-eyed Well or Four-open Well.

此井为单一井穴，上覆石板并留有四个汲水孔，所以称为「四眼井」或「四孔井」。

The most typical situation for this would be a four-straight or four-flush on the board, with the straight being the most common, because you are better able to judge that your opponent would not have been helped.

最经典的情形是4顺子或4同花降落了，但你要确定对手确实没有。

Results: The chair-side time of two, three and four root canals was decreased obviously in four-handed technique group when root canals were obturated. There was no statistical difference in single root canal between two groups.

结果：单根管充填时两组医生的椅旁操作时间无明显差异，双根管、三根管及四根管充填时医生的椅旁操作时间有显著性差异。

If you find a four-leaf clover 5/?If you find a four-leaf clover

如果你找到一株四叶三叶草，它会为你带来幸福。

Four-post lift has four posts, two beams and two plates.

四柱式举升机有四根立柱、两根横梁、用于支撑汽车的两个台板。

October 2006, the company developed its own production of fully automatic double-precision four-post, unilateral hydraulic cutting machine, precision four-post Hydraulic Cutting Machine, through the provincial-level scientific and technological achievements to identify new products, product technical performance indicators Tatsu similar products leading level, was classified as a national patent product and provincial "Spark Plan" products, can replace imports.

2006年10月，公司自行研制开发生产的精密四柱全自动双、单边液压裁断机，精密四柱式液压裁断机通过省级新产品科技成果鉴定，产品技术性能指标达国际同类产品领先水平，被列为国家专利产品和省"星火"计划产品，可替代进口。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。