1)  surge irrigation
涌流灌
1.
By means of the two years experiment in the general irrigation station of Water Conservancy Department, we raise a new economizing-water irrigates to synthesize the technique mode which is in the way of soft tube surge irrigation with field ditch, and this not .
通过在水利部灌溉试验总站2年的试验研究,提出软管涌流灌溉配套垄膜沟种耕作方式的节水灌溉综合技术模式,提高了灌溉水的利用率,解决了微灌技术成本高和操作难度大等难题,探讨了微灌设施用于大田作物灌溉的可行性方案。
2)  Surge flow irrigation
涌流灌溉
1.
Surge flow irrigation is a new type water saving irrigation technique on earth surface.
涌流灌溉是一种新型的地面节水灌溉技术 ,在我国发展已有十几年的历史。
2.
This was of importance for the further research of surge flow irrigation principle.
这对涌流灌溉原理的研究具有重要的参考价值。
3)  Surge irrigation
波涌流灌溉
1.
It is very necessary and exact to research and development automatic control device which adapt to most of our country s irrigated area channel conveyance and surface irrigation condition and can use surge irrigation in field.
开发研制与目前我国广大灌区渠道输水、地面灌溉条件相适应的、能够在田间实现波涌流灌溉的自动控制装置,是十分必要的,也是目前急需的,是推动波涌流灌溉技术发展,促进农业节水灌溉,实现节水农业的必要途径之一。
4)  upwilling current
涌流灌溉技术
1.
The essay talks about the tests and application of upwilling current in irrigation to save water resource in agricultural model garden.
随着农业示范园区的建设 ,为了节约用水和缓解我国水资源供需紧张状况 ,特简介了涌流灌溉技术的试验和应用的情况 。
5)  inrush current
涌流
1.
The expenriment shows that this equipment is fast response, highprecision and without inrush current input.
试验表明:该设备响应快,精度高,实现了无涌流投入。
2.
The experimental results show that the operation is stable and may be used to complete the synchronized-closing of capacitor banks in order to limit the transient over-voltage and inrush current.
结果表明,相控真空断路器动作分散性小,可以有效地完成电容器组的同步关合,大幅度降低系统暂态过电压、减小涌流。
3.
The transient overvoltage and inrush current when energizing shunt capacitor banks are discussed .
讨论了并联无功补偿电容器组关合时的暂态过程;分析了电容器组中性点接地和不接地两种情况下关合的最佳时机;对电容器组随机关合和同步关合过程进行仿真,表明采用同步开关技术可以大大减小电容器组投入时的过电压和涌流。
6)  surge current
涌流
1.
When making the capacitor into the power system at end voltage zero- cross of contactor,it can limit surge current within 5 times of the rate current of capacitor.
在现有普通交流接触器的基础上,对其控制回路进行特殊改造,在接触器触头端电压过零点附近将电容器投入,能有效地将涌流控制在电容器额定电流的5倍以内。
2.
This paper makes a theoretical calculation on the overvoltage and surge current at switch-on of capacitors for reactive power compensation and simulates the transient voltage and current at switch-on of capacitors for reactive power compensation by using ATP-EMTP software.
结合实际运行的变电站,对其中的无功补偿电容器合闸过电压、涌流进行了理论计算,并利用ATP-EMTP软件,对无功补偿电容器合闸过程中的电压、电流的暂态过程进行仿真。
参考词条
补充资料:变压器涌流
      空载变压器刚接上电源时,电源侧出现的很大电流,其值可高达额定电流的6~8倍。涌流产生的原因是变压器铁心磁化曲线的非线性。如果铁心的磁化曲线如图中a所示,电源侧接入正弦电压u,按照磁化曲线Φ-i的关系,就可作出涌流波形i(图b)。涌流的波形和其幅值的大小,不仅与磁化曲线有关,而且与铁心剩磁磁通ΦR和电压投入时的相位均有关系。剩磁ΦR的存在,使铁心中的饱和磁通增大,导致励磁电流进一步上升。在电压投入相位为0°时,涌流值最大。图中标出的只是一个周期内的涌流波形,实际涌流是一种暂态电流,时间上是连续的。由于绕组存在电阻,随着时间的推移,波形的辐值会逐渐减小。涌流波形开始时偏在时间轴的一侧,然后逐步进入稳态,即电流与时间值逐渐对称,最后变成幅值很小而与时间值完全对称的正常的励磁电流,与电压相位差90°。
  
  三相变压器中,涌流在每一相中均可能出现。涌流是非正弦波形,含有许多谐波分量,其中以直流、二次和三次谐波分量占的比重较大。这些谐波的影响需加以抑制。
  

说明:补充资料仅用于学习参考,请勿用于其它任何用途。