The deterioration of global environments brings trade restriction measures into the consideration of environment protection and the prick up of international economy competition causes the cut down of tariff and non-tariff trade barrier.

Then discusses its economic effects: quantity control, price control and trade restriction of exported goods.

然后从绿色壁垒对进口产品的数量控制、价格控制和对贸易的制约三个方面对绿色壁垒的经济效应进行了分析。

Mainly makes a specific explanation on trade restriction effect and trade diversion effect.

这部分主要从贸易限制效应和贸易转移效应方面进行具体阐述。

Studies on the Active Groups of Pst I Restriction Endonuclease

限制性核酸内切酶PstⅠ活性基团的研究

Restriction Endonuclease Analysis of Egg Drop Syndrome Virus Isolated from the West Region of Henan Province

豫西地区减蛋综合征病毒基因组酶切图谱分析

Methods Cell culture and methylation sensitive restriction endonuclease digestion were used.

方法采用细胞培养和限制性内切酶解分析技术观察分析细胞生长及细胞基因组DNA甲基化水平。

Study on restriction endonuclease map of mtDNA of three species in Cyprinidae

三种鱼mtDNA的限制性内切酶分析

Standardization of restriction endonuclease expression in molecular biology books and periodicals

分子生物学书刊中限制性内切酶的规范表达

After a restriction endonuclease cleavage, two expected smaller fragments were observed.

经限制性内切酶反应，获得两个预期大小的片段。

Restriction endonuclease analysis of egg drop syndrome virus

鸡源和鸭源减蛋综合征病毒DNA酶切图谱分析

Study on A Type ⅱ Restriction Endonuclease Ncr ⅰ

Ⅱ型限制性核酸内切酶NcrⅠ的研究

The study on restriction endonuclease enzyme analysis method in atypical pneumonia

传染性非典型肺炎限制性内切酶检测方法的研究

Detection and Typing of Newcastle Disease Virus by RT-PCR Coupled with Restriction Endonuclease Analysis

RT-PCR结合限制性内切酶分析法区分NDV强弱毒株

Traditional methods to assay the activity of restriction endonuclease are discontinuous and time consuming.

传统的检测限制性内切酶活性的方法是不连续的，费时的。

Restriction Endonuclease Analysis of Mitochondrial DNA of German Saddle Horse

德国骑乘马线粒体DNA的限制性酶分析

Design and expression of an artificial restriction endonuclease

一种人工限制性内切酶的设计与表达

Identify the specificity of PCR products by DNA sequencing and restriction endonuclease reactions

以DNA测序及限制性酶切反应鉴定PCR产物特异性

Restriction endonuclease and target fragment PCR detection results show that the expression vector was constructed successfully.

经过酶切鉴定和目的片段PCR检测鉴定，证明表达载体构建成功。

AFM Studies of Interaction of DNA and Restriction Endonuclease

DNA与限制性内切酶相互作用的AFM研究

Isolation and Restriction Endonuclease Analysis of Rice Chloroplast DNA

水稻叶绿体DNA的分离纯化及其限制酶切分析

Methods: DNA sequencing and restriction endonuclease reaction was used.

方法：采用DNA测序及限制性酶切反应方法。