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alternate current
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  交流电
     The directional solidification of Al-Si alloys under different conditions was studied in this paper, and these conditions include different alloy components, different tension velocities and applying alternate current.
     通过对不同种Al Si合金所进行的不同拉伸速度、改变合金成分以及对不同成分合金施加交流电处理的定向凝固,研究了在上述不同工艺条件下Al Si合金定向凝固组织的变化。
短句来源
     After that, The author explore the factors which affect the real-time accurate measurement of the alternate current Parameters and discuss the realtime measurement methods of the alternate current.
     并在此基础上分析了影响交流电参量的实时准确测量因素和交流电实时测量方法。
短句来源
     Comprehensive analyses and examinations are made of the reason for the reduction of the accuracy of the ρs observations on NS component at the Gaoyou Seismic Station after a thunder shower on July 24,2002. It is found that an a. c. contactor was burned down, leading to the leakage of electricity of one of the three phases of the alternate current to the earth and a loop was formed with the zero line in the transformer.
     对高邮台地电NS向ρs的观测精度在2002 07 24雷雨后出现降低的现象进行了分析排查,发现是一交流接触器在遭雷击时烧坏,导致交流电三相中的一相对地漏电,与变压器中的零线形成回路所致。
短句来源
     A new technique of capacitor scanning for removing alternate current noise and reducing systematic error is used in this temperature logger datalogger.
     该温度采集仪用电容扫描法新技术去交流电干扰,减小系统误差,用高精度温度传感器AD590实现冷端补偿。
短句来源
     In this paper,a new kind of intelligence convenient carried electronic scales system is introduced . It is based on the Single-Chip Microcomputer GMS97C51. The system has advantages of physical volume small,weight light and accuracy high and it can automatically go to the tare to get the net weight,speech to report a diagraph data etc. That system at there is no the situation of alternate current carry on measure the heavy convenience,credibility.
     本文提出了一种基于GMS97C51单片机控制的新型智能便携式电子称重系统,该系统具有体积小、重量轻、精度高、可自动去皮重得净重、语音报出测量数据等优点,在没有交流电的场合进行测重方便、可靠。
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  “alternate current”译为未确定词的双语例句
     It showed that the fusion frequency of protoplasts reached 24.6% with the following parameters: alternate current (AC) 100V/cm , direct current (DC) 1.5kV/cm , DC pulse width (PW) 40μs , DC pulse interval 0.5 s, Number of DC pulse 2 , 10% mannitol and 0.4 mmol/L CaCl2 in electrofusion solution.
     结果表明 :在交流电场为 10 0V/cm ,直流脉冲电场为 1.5kV/cm ,脉冲幅宽为 4 0 μs ,脉冲间隔为 0 .5s ,脉冲次数为 2次 ,电融合液组成为 10 %甘露醇和 0 .4mmol/LCaCl2 时 ,原生质体的融合频率达到 2 4 .6 %。
短句来源
     It was shown that the binuclear heterokaryons frequency reached 15% with the following parameters: alternate current (AC) 125 V/cm, AC time 60 s, direct current (DC) 1250 V/cm, DC pulse width 50 μs, DC pulse interval 0.5 s, No.
     研究表明,在AC(交变电场)125V/cm、DC(直流脉冲)1250V/cm、AC作用时间60s、DC脉冲时间50μs、DC脉冲个数为3、DC脉冲间隔为0.5s时融合率较高,双核异核体率可以达到15%以上。
短句来源
     It was shown that binu-clear fusion frequency reached 40% with the following parameters: alternate current (AC) 100 V/cm, AC duration 20 s, direct current (DC) 1100 V/cm, 1 DC pulse with 60 s.
     研究表明,在交变电场(AC)100 V/cm、AC作用时间20 s、直流脉冲电压(DC)1 100 V/cm、DC脉冲时间60 μs、脉冲数1次时,双核融合率可达40%以上。
短句来源
     The Unified Power Flow Controller (UPFC) is regarded as the most versatile FACTS (Flexible Alternate Current Transmission System) device, its attractive performance is that the Unified Power Flow Controller can control rapidly line power flow, increase system transmission ability, damp the oscillation and improve the power system transient stability.
     统一潮流控制器(Unified Power Flow Controller,UPFC)是灵活交流输电系统(Flexible Alternate Current Transmission System,FACTS)技术最具代表性的成员,是当今电力新技术研究中的一个热点。 它的最大特点是能快速精确的控制潮流、增大电力系统的输送能力、提高电力系统的暂态稳定性。
短句来源
     The photoluminescent and cathodoluminescent properties of Eu~(3+), Tb~(3+), Bi~(3+)activated these hosts from the above-mentioned systems were investigated. Good cathodoluminescent properties are found for these phosphors such as Gd3Ga5O12:Tb、Y3GaO6:Eu、Gd_3GaO_6:Bi. The adsorption spectra and the alternate current impedance spectra of these hosts were also measured.
     本文对这些体系的复合化合物分别以Eu~(3+)、Tb~(3+)、Bi~(3+)为激活剂合成了一系列荧光粉,测试分析了这些荧光粉的光致发光和阴极射线发光性能,其中Gd_3Ga5O_(12):Tb、Y_3GaO_6:Eu、Gd_3GaO_6:Bi的阴极射线发光性能较好。
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  相似匹配句对
     The Reactive Power of Alternate Current
     对交流电路无功功率的探讨
短句来源
     Lab experiments on alternate stray current corrosion
     交流杂散电流腐蚀室内实验
短句来源
     DISPLACEMENT CURRENT
     位移电流
短句来源
     Current Research on Syndromes
     证候及其现代研究
短句来源
     On Alternate Precipitation Steel
     相间沉淀用钢概述
短句来源
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  alternate current
Use of alternate current polarography in the study of biological activity of 2-styrylchromone derivatives
      
For the best result, protoplasts with a cell density of 5 × 105/mL were treated with an alternate current (1 MHz, 200 V/cm) and pulsed with a direct current (2 kV/cm) for 100μs in 2.5 mM CaCl2 and 0.55 M mannitol.
      
The set of electrodes was activated by an alternate current of 31kHz.
      
For the connection of PV arrays with the electricity network inverters converting the direct current produced by PVs to alternate current.
      
Another way of interpreting the result is to say that the guard lead provides an alternate current path around the measuring circuit.
      


The changes of the calcium flux in the anterior byssus retractor muscle of Mytilus edulis duringcontraction and contracture have been observed with the aid of radioactive calcium. After previousloading with Ca~(45), stimulation of the muscle either by 50 cycles alternating current or by directcurrent increased the outlux of Ca~(45). With the muscle in sea water containing Ca~(45), the influxof the radioactive element was also increased during contraction produced by electrical stimulationas well as during...

The changes of the calcium flux in the anterior byssus retractor muscle of Mytilus edulis duringcontraction and contracture have been observed with the aid of radioactive calcium. After previousloading with Ca~(45), stimulation of the muscle either by 50 cycles alternating current or by directcurrent increased the outlux of Ca~(45). With the muscle in sea water containing Ca~(45), the influxof the radioactive element was also increased during contraction produced by electrical stimulationas well as during potassium and acetylcholine contracture. In all cases, more vigorous or prolongedcontraction or contracture was associated with a more marked increase of the calcium flux.Although the increase of the outflux during a prolonged contracture became rather irregular in itstime course, it tended to persist throughout the contracture. These findings are in keeping withthe view that calcium probably plays a role in the coupling between excitation and contraction.

贻贝前足丝收缩肌在直流电或交流电刺激引起收缩时,纤维钙的外向通量和内向通量都增高,其程度和收缩的大小有平行关系。用氧化钾或乙酰胆碱引起肌肉挛缩时,纤维钙的内向通量也增高。从这些结果来看,贻贝肌肉的收缩或挛缩和钙可能有密切的关系。

Up to now, the alternate current oscillographic polarographic titration (1. e. the polarographic titration using dE/dt=f (E) curves to indinate the equivalent point) has been applied only to determine micro quantities of depolarizers. In this paper macro quantities of Ga (0.2 to 183.7 mg.) was titrated in 30 ml. solution buffered with (NH_4)_2SO_4—NH_4OH (pH=11), with an average error smaller than 0.5%. The end point is indicated by the disappearance of the anodic incision of Ga. The end point is sharp....

Up to now, the alternate current oscillographic polarographic titration (1. e. the polarographic titration using dE/dt=f (E) curves to indinate the equivalent point) has been applied only to determine micro quantities of depolarizers. In this paper macro quantities of Ga (0.2 to 183.7 mg.) was titrated in 30 ml. solution buffered with (NH_4)_2SO_4—NH_4OH (pH=11), with an average error smaller than 0.5%. The end point is indicated by the disappearance of the anodic incision of Ga. The end point is sharp. The titration can also be carried out by adding a measured quantity of standard EDTA to solution containing Ga and titrating the excess EDTA with standard Zn solution. The appearance of incision of Zn indicates end point. Hanging mercury drop electrode was used as polarized electrode, Pt-wire or Ag-wire or Hg pool as reference electrode. Al, Ti, Bi and Sb when present in small amounts do not interfere.

直到現在,交流示波极譜滴定仅应用於微量分析。本文应用交流示波极譜滴定於常量分析取得了滿意的結果。作者认为这种滴定方法很有发展前途。

On the basis of Heyrovsky-Forejet principle of Constant alternating current oscillopolarography, we have constructed an dE/dt~E type oscillopolarograph with domestic radio parts. The instrument worked well with suitable sensitivity and may be used for analysis of trace elements in ultrapure materials. Several modifications have been made; (1)a circuit of high voltage source, (2) a constant patential circuit, (3) an outside electrolysis arrangement of constant current control and (4) an amplifier...

On the basis of Heyrovsky-Forejet principle of Constant alternating current oscillopolarography, we have constructed an dE/dt~E type oscillopolarograph with domestic radio parts. The instrument worked well with suitable sensitivity and may be used for analysis of trace elements in ultrapure materials. Several modifications have been made; (1)a circuit of high voltage source, (2) a constant patential circuit, (3) an outside electrolysis arrangement of constant current control and (4) an amplifier of higher coefficient. The instrument was suitable for the determination of depolarizers with a concentration range from 10~(-3) to 5.10~(-5) M without previous electrolysis.

本文根据捷克Heyrovsky—Forejet提出的原理所設計的恆电流交流示波极譜仪线路图的設計思想,利用全部国产无线电元件。終于試制成了一架性能尚好,灵敏度与p—576相近的,可能适用于超純物质中測定痕量組分用的dE/dT~E型示波极譜仪。並对原仪器作了以下几点改进,卽改用了高压线路,增加了稳压装置,适当地提高了垂直放大級的放大系数以及采用了外加稳流电解裝置。在试制与調整仪器过程中,摸索了一点經驗,可供国內同行参考。

 
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