Standard Test Method for dielectric breakdown voltage and dielectric strength of D149 ASTM solid electrical insulating materials at industrial power frequencies.
ASTM D149固体电绝缘材料在工业电源频率下的介电击穿电压和介电强度的试验方法。
The system is controlled by chip microprocessor 8031 and can transmit standard sinusoidal waves with various frequencies and arbitrary time intervals according to various requirements.
该系统采用8031单片机进行控制，根据控制命令可发出不同时间间隔、不同时间长度、不同频率的标准正弦波信号。
By applying frequency analysis method to a standard active band-pass filter circuit, a formula to calculate characteristic frequencies is offered.
根据标准有源带通滤波器原理，采用频域分析法，可得出有源带通滤波器的特征频率计算公式。
Standard designature methods, using modeled acoustic source signatures, were inadequate, especially at low frequencies.
利用模拟声源特征的标准反信号方法是不够的，尤其是在低频率情况下。
RD7000SL Construction Industry A broad range of standard active frequencies and rugged construction make the RD7000SL a reliable and versatile locator.
RD7000SL建筑行业专用多种标准频率、结构结实、可靠的多功能定位仪。
AMD said it expects its native quad-core processors to scale to higher frequencies in Q4 in both standard and special edition versions.
AMD预计在Q4时标准和特别版的原生四核处理器都会推出更高的频率。
The value of reaction spectrum of natural frequencies is calculated by standard reaction spectrum.
依据标准反应谱，得到各阶频率对应的反应谱值。
Objective to investigate the disqualification status due to hearing loss at various frequencies in selection of flying cadets and put forward suggestion on revising the standard.
目的调查招飞听力检查的淘汰情况，探讨修改高频听力损失标准的可行性。
The calibration of four-terminal-pair(4TP) impedance meters at their working frequencies requires the knowledge of 4TP standard capacitor frequency characteristic.
对四端对阻抗测量仪在其使用频段内进行校准，须确定四端对标准电容器的频率特性。
Cylindrical rotor motor with high starting moment is applied and its protection standard meets IP54 Specifications. The duty cycles and power frequencies are available for various USES of the hoist.
高起动转矩圆柱转子电机，防护等级IP54，负载持续率及接电次数均能满足用户使用要求。
Cylindrical rotor motor with high starting moment is applied and its protection standard meets IP54 Specifications. The duty cycles and power frequencies are available for various USES of the hoist.
高起动转矩圆柱转子电机，防护等级IP54，负载持续率及接电次数均能满足用户使用要求。
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