查询词典 square wave

The signal is a square wave with two values, high and low.

答：以太网使用曼彻斯特编码，这就意味着发送的每一位都有两个信号周期。

For a square wave, the waveform is constant but switches sign every half period.

对于方波的波形不变，但每半年开关期间签署。

The excitation source is similar to a square wave signal.

研究了基于双极性脉冲电流激励原理的微弱电导测量技术。

The perfectly designed square-wave insures the stableness and concentration of electric arc .

设计理想的方波电源，确保了电弧的稳定和集中。

Key words: geometry; fractal; characteristic angle sequence function; method of undetermined coefficient; square wave Koch-like curve

关键 词：几何学；分形；特征角序列函数；待定系数法；Koch类方波曲线

We studied the leaching behavior of paraquat in soils with a very sensitive electroanalytic technique, i.e., square-wave voltammetry in couple with screen-printed carbon electrode.

本论文以电化学分析技术方波伏安法配合新发展的网版印刷碳电极，探讨对巴拉刈侦测上的灵敏性与其在土壤中的淋洗试验。

The results showed that the CV performance of PbO〓/PbSO〓 and PbSO〓/Pb powder microelectrode transformed from PbCO〓 under the optimize condition (the positive electrode was activated by asymmetric CV and asymmetric square wave current ways and the negative electrode using asymmetric CV) were better. Their electrode performances were as good as those made from leady oxide product by ball mill under the same conditions.

结果表明，将PbCO〓先制成粉末微电极，在30℃ 1.0mol/L H〓SO4〓溶液中经过化学转化为硫酸铅粉末微电极，以不对称信号活化(对PbO〓/PbSO〓电极，采用不对称循环伏安和不对称方波电流两种方法；对PbSO〓/Pb电极，采用不对称循环伏安法)得到电极的性能最好，正极活性物质的利用率高达89％，负极的达95％。

A non-singular single integral mathematical model is adopted to calculate the external intermittent and alternative longitudinal magnetic field acquired by single axisymmetrical and cylindrical hollow coil t which is coaxial to electrode and excitated by a revisable pulsed current of square wave t in austenitic stainless steel GTA welding.

针对奥氏体不锈钢外加纵向磁场的气体保护钨极电弧焊接时，与电极同轴的单个轴对称空心圆柱线圈在双向脉冲矩形励磁电流作用下产生的间歇交变纵向磁场，采用无暇点单积分磁场的数学模型，对＊TAW焊接外加间歇交变纵向磁场进行了数值计算，该方法具有模型简单、计算速度快和精度高等优点并讨论了该间隙交变纵向磁场的分布、磁场的均匀性及其纵向分量与径向分量的比率等规律及其对焊接行为的影响，认为横磁分量将削弱GTAW外加纵向磁场的有利作用，影响磁控电弧的焊接质量

In order to solve the problem of crevice corrosion resulted from the warping and cracking of the coatings, the feasibility of cathodic polarization with square wave pulse and the effectiveness of its control over wedgy crevice corrosion were explored.

在外加阴极极化的条件下，缝内极化电流相对较小，缝内极化电位比缝外金属略正；缝内Cl〓浓度降低，pH值显著升高；测定了这些参数在缝内的位置分布。

Experimental results showed that the presence of chloride ion would effectively improve the deposition of metal, and largely increase the square wave anodic stropping peak height of metal depositing.

实验结果显示，分析溶液中含有氯离子可有效地改善金属铋、铅和镉在电极表面的沉积，大幅度地提高沉积金属的方波阳极溶出峰的峰高。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。