方波

In this paper, we optimized the thickness of the doublers and triplers, mismatch angles and other parameters of Ⅰ/Ⅱ angle detuning and Ⅱ/Ⅱ polarization mismatch third harmonic generation schemes by numerical calculation way.

采用四阶龙格－库塔数值计算方法，以Ⅰ／Ⅱ角度失谐和Ⅱ／Ⅱ偏振失配两种三倍频方案为例，给出了入射基频光为平面方波，功率密度5GW／cm2的情况下，KDP晶体三倍频参数的优化结果。

Square-wave passive standby UPS based on MCU is presented. There are some functions of the system: realizing the uninterruptible power supply according to following the track of grid and changing grid and inverter in phase when grid is abnormal; advanced battery management; communication and supervision with PC. The principle of the system is analyzed.

研究了一种单片机控制的单相方波输出后备式UPS，该系统实现了在市电不同状态下，系统逆变输出与市电的同相切换，实现了对设备的不间断供电；实现了对蓄电池的智能管理；可以与 PC机进行通讯，便于用户监控等功能。

DG1000 series function / aleatoric and undee generator can offer 5MHz, have rise quickly edge and drop the square wave of the edge, and have the frequency of high accuracy, broadband belt measure a function.

DG1000系列函数/任意波形发生器能够供给5MHz、存在迅速回升沿和回升沿的方波，而且存在高精度、宽频带的频率测量性能。

This experiment was in a creative way to adopt the high pressure and square wave to drive the electric light Q-Switch, achieving dual-wavelength、dual-pulse Cr:LiSAF tuneable laser output.

为实现单光束、双波长、双脉冲Cr：LiSAF调Q激光输出，实验中创造性地采用高压方波驱动电光Q开关实现了双波长、双脉冲的Cr：LiSAF可调谐激光输出。

Tuneable ; dual-wavelength ; dual-pulse ; Cr:LiSAF ; high pressure and square wave

可调谐；双波长；双脉冲； Cr：LiSAF ；高压方波

Well-separated voltammetric peaks were observed for dopamine and ascorbic acid at the DDAB/GC- modified electrodes.

使用循环伏安法及方波伏安法来研究神经传导物质藉由DDAB修饰薄膜於pH=6.5磷酸盐溶液中。

It expounds that non-linearity mechanical properties would be cansed in high speed section.as the air gap magnetic field is distributed with sine-wave, and the current of stator winding with quasi-square wave in PM brushlcss dc motor,and calculated on non-linearity properties theoretically.

阐述当气隙磁场为正弦分布和定子绕组电流为准方波时，在永磁无刷直流电动机机械特性的高速段引起的非线性，并对此非线性进行了理论计算。

The theoretical limitation of energy absorption density of a ZnO varistor is 517 J/cm3,and the related theoretical limitation of its voltage gradient is 686 V/mm.

笔者通过理论分析与计算得出，特高压避雷器适用ZnO阀片的方波能量吸收密度理论极限值为517 J/cm3，对应的电压梯度理论极限值为686 V/mm。

The square wave anodic stripping voltammetric methodology using a screen printed carbon electrode in situ plated in mercury was developed by the authors to determine lead in tea.

建立了同位镀汞法修饰的丝网印刷碳电极电化学方波溶出伏安法快速检测茶叶中的铅的方法。

The conclusion shows that the airgap, pole arc, winding and slot skewing must be properly matched in order to obtain the optimum torque characteristic.

指出了该工作方式下气隙、极弧、绕组，斜槽间的合理配合可以保证方波无刷直流电动机具有较为理想的力矩特性。

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。