dras
英
美
网络 需求响应自动化服务器; 德拉斯; 可变剪接数据库; 抓死
双语例句
- The Development of Natural Gas DRAs and Drag Reduction Performance Test
天然气减阻剂的研制及减阻性能测试 - DRAs ( Dielectric Resonator Antennas) have some outstanding merits, such as small size, high efficiency and wide bandwidth.
介质谐振天线具有一些突出的优点，如：体积小、效率高、带宽很宽等。 - The influence of the fiber loss on adiabatic compression of fundamental solitons in dispersion decreasing fiber ( DDF) is investigated, and the method used to improve the adiabatic compression effect in DDF based on distributed Raman amplifiers ( DRAs) has been simulated numerically.
数值研究了光纤损耗对色散渐减光纤中基孤子脉冲的绝热压缩的影响，并分析了利用分布式的拉曼放大来提高DDF的绝热压缩效果的方案。 - Adopting the DRAs can improve the compression effects in DDF and get a higher compression factor and pulse energy;
采用分布式的拉曼放大能对DDF的绝热压缩起到很好的优化效果，获得更高的压缩因子和脉冲能量； - The said DRAs are the chemical additives to reduce liquid flow friction and to increase flow rate.
所谓减阻剂，是指能减少液体流动摩阻、增加输量的化学添加剂。 - The system was laying a solid foundation for the screening and development of natural gas DRAs. 3.
该评价系统的设计完成，为天然气减阻剂的筛选与研制打下了坚实的基础。 - The elastic throughput was improved and the rigid pipeline changed into elastic when DRAs were used in the practical pipeline transportation. It also solved the outstanding problem of high energy consumption for long-distance, big-diameter pipeline.
在天然气实际管道输送过程中使用减阻技术，可提高管道的输量弹性，使管道由刚性变为弹性，并能很好的解决长距离大管径输送管道能耗大的突出问题。 - They are divided to be water base DRAs, oil base DRAs and gas base DRAs according to different using objects.
根据其使用对象不同，可分为水相减阻剂、油相减阻剂和气相减阻剂。 - DRAs used in crude oil and other correlative products are named oil base DRAs.
用于原油及其相关产品中的减阻剂称为油相减阻剂。 - The gas DRAs technology could overcome the disadvantages of the inner coating technology and had wide application foreground.
直接注入天然气减阻剂减阻技术可以克服管道内涂层减阻技术的不足，具有广阔的应用前景。