查询词典 amplitude

When the voltage space vector is located within overmodulation mode I, the locus in the hexagon remain the circular, but the amplitude is larger than the modulus of voltage space vector to compensate the voltage distortion on the edge of hexagon; the reference voltage vector tracks the hexagon sides in the remaining.

实验结果表明，该算法简单易实现，能够有效的提高直流母线的电压利用率，具有在低频运行稳定，逆变器输出电流正弦度好等优点。

The results indicate that during Qigong practice there are significant changes in one's brain α wave, facial and palmar temperature, low frequency vibration amplitude of acupuncture points and chemical transmitters in the blood.

结果发现练功时脑α波，手掌及脸部的温度，甚至重要的穴位，血液中的重要化学传递物质均有极大的改变。

Methods 20 healthy volunteers and 37 patients with CAD were involved in this study. Color changes resulted from CK timing and amplitude were observed at parasternal short-axis view, apical four-chamber view and two-chamber view; The percent of regional fractional area change in 30﹪ diastolic period , namely color kinesis diastolic index, were obtained using ICK software.

观察20例正常人和37例冠心病患者胸骨旁左室乳头肌短轴观、心尖四腔、两腔观各节段心肌舒张期心内膜位移引起彩阶的变化，并运用ICK定量分析软件计算出心内膜于舒张早期30﹪时间内位移的面积占整个舒张期内膜位移面积的百分比，即心内膜位移指数。

The calls of non-passerine are some kinds of monotonous dull vocalizations with the characteristics of low and deep frequency, single syllable, low basic frequency and with no ability of modulation in frequency and amplitude. Most of the calls are monotonous and low quality mainly based on the basic song. Compare the vocal of sub-oscine passerine with non-passerine, they have some similar aspects, but the former possesses of stronger capability of vocal control.

非鸣禽的叫声低沉而单调，音节种类单一，基本音频率低，缺乏频率调制以及幅度调制的能力，叫声的品质因数很低，不悦耳，大多为以基本音为主的单音调低音品叫声，亚鸣禽的叫声与非鸣禽近似，但在控声能力方面又有所提高。

The bifurcation and chaos behavior of impact and rubbing fault rotor system caused by the parameters of nonlinear rigidity, rotor rotating speed, eccentric mass is analyzed, in the numerical value analysis method. The bifurcation diagrams, maximum Lyapunov exponent diagrams, Poincaré maps, phase plane portraits, trajectories of journal center, time-history curve, amplitude spectra diagrams of the rotor motion are used. The convert and evolution course of periodical response, quasi-periodical response, double-periodical bifurcation, chaos of the system response is analyzed.(3). It is deduced that the general differential equation of bending-torsional-pendular coupling vibration about rotor with the gyroscopic moment. On the basis of this equation, the general differential equations of coupled bending, torsional and pendular nonlinear vibration about rotor with unbalance character and rubbing character are deduced.

2建立了具有非线性刚度的转子系统在非稳态非线性油膜力作用下的径向碰摩动力学微分方程，并应用含高阶余项的非线性动力方程的线性化数值法研究了此类系统响应的复杂动力学行为，利用转子响应的分岔图、最大Lyapunov指数曲线、Poincaré截面映射、时域波形、相轨线、轴心轨迹、幅值谱等图形分析了系统响应的周期运动、拟周期运动、倍周期分岔、混沌等运动形式的转化与演变过程，重点研究了非线性刚度、转子转速、偏心质量等系统参数对碰摩故障转子系统的分岔和混沌行为的影响。

In chapter 2, we discussed the effect of this mechanism to both low and high altitude satellites In certain condition, eccentricity e may have long periodic variation with large amplitude and the pericentric distance decreases.

第二章即讨论了这种机制对高轨、低轨卫星的影响。

While the primary has not atmosphere like Luna, it is the gravitational effect that causes the long periodic variation with large amplitude in eccentricity and ends the lifetime with decreasing pericentric distance.

若中心天体无大气，这种机制就成为制约轨道寿命的最主要因素。

While the peroneal nerves, 4% had slightly decreased amplitude of compound motor action potential.

在所检排神经中，4%的患者有轻度复合肌肉动作电位波幅下降。

The amplitude of wave b changed remarkably and peaked after 5 minutes photopic adaptation.

经过分析观察到在不同的明适应时间，a， b波的潜伏期均无明显差异，b波的振幅变化较为明显，明适应5min后记录到的F-ERG，b波振幅值达高峰。

The latencies of wave a and b showed no significant difference. The amplitude of wave b changed remarkably and peaked after 5 minutes photopic adaptation.

经过分析观察到在不同的明适应时间，a， b波的潜伏期均无明显差异，b波的振幅变化较为明显，明适应5min后记录到的F-ERG，b波振幅值达高峰。

The United Kingdom has pledged to provide technical assistance to the peacekeeping effort in Darfur, including airlifting supplies and equipment to assist the African peacekeepers.

英国承诺为达佛的維和努力提供技术帮助，包括提供非洲的維和部队空运补給和裝备。

Results: The level of ET-1mRNA in placental villus was significantly higher in pre-eclamptic women than that in control group.

结果：妊高征组患者胎盘绒毛组织ET-1 mRNA的表达较正常妊娠组明显增高。