dra的例句大全

The analysis results show that DRA can remarkably increase the transportation capacity of pipeline and decrease the operating pressure of pipeline and the load of transportation equipment in some extent.

分析结果表明，添加减阻剂能够显著提高管道的输送能力，在一定程度上可以降低管道的运行压力和输油设备的负荷。

No more than two sequences were found in each individual at the DRA locus, strongly suggesting only one DRA locus was amplified in this study.

每个个体均不多于两种DRA序列，提示鲸类的DRA座位是单拷贝的基因。

With the rapid development of petroleum industry, high molecular polymers as drag reduction agents ( DRA) have been widely used in conduits during the transportation of crude oil.

随着石油工业的发展，超高分子量聚合物作为原油输送减阻剂在国内外输油管线中得到日益广泛的应用。

This article summarizes the development of the fiber optical Raman amplifiers and theory and features of distributed fiber Raman amplifier, mainly describes the combined application of EDFA and DRA.

概述了光纤喇曼放大器的发展情况、分布式喇曼放大器的原理和特性，重点阐述了掺铒光纤放大器与喇曼放大技术的组合应用；

Finally the article states that the combined application of DRA and EDFA can significantly increase the function of long distance transport system of fiber optical and hence enlarge the applicable area of EDFA.

最后指出，这两种技术的组合应用能明显提高长距离光纤通信系统性能，使掺铒光纤放大器具有更广阔的应用前景。

A brief introduction to MLSSA ( Maximum-Length Sequence System Analyzer) is presented, which is developed over the MLS signal theory by DRA laboratories, U.S.

介绍美国DRA实验室研制的基于最长序列MLS信号测试技术的扬声器电声分析系统MLSSA。

The ecological and environmental conditions and water quantity and quality security of the Danjiangkou reservoir matters the coordinated growth of economic and social and environmental protection in the Danjiangkou Reservoir Area ( DRA).

其生态环境状况和水质水量安全关系到库区的社会经济和环境保护的协调发展。

Restriction endonuclease Dra ⅰ and Hind ⅲ were used to digest genomic DNA in the pair matched cancerous and non cancerous esophageal tissues for Southern blot analysis.

根据序列的酶切位点分析，选择DraⅠ和HindⅢ内切酶，对配对的食管癌组织和非癌食管组织DNA酶切，Southern印迹杂交分析。

Lygodium japonicum; polysaccharide ( PSA); response surface methodology ( RSM); dimension reduction analysis ( DRA);

海金沙草；多糖；响应面分析；降维分析；

The mechanism, development, testing and field test of EP DRA are introduced.

介绍了EP系列减阻剂的作用机理 、 研制方法 、 中试生产和现场实验的概况.

using ticl_4/ alet_2cl as initiating system to polymerize long chain α-olefin by bulk polymerization under atmosphere pressure, high efficiency oil-solvent drag reducing agent ( dra) was synthesized.

以TiCl4/AlEt2Cl为引发体系，在常压条件下采用本体聚合法引发长链α-烯烃聚合，制备高减阻性能的油溶性减阻剂（DRA）。

The ASE generated by the DRA propagates in both directions along the optical fiber spans.

DRA产生的ASE沿着光纤段的两个方向传播.

Field experiment results show that different volumes of DRA added can increase oil throughput of the pipeline and improve the safety of pipeline operation.

结果表明，添加不同量的减阻剂均可获得较好的减阻增输效果，并能提高管道运行的安全性。