This sensor featuring plane-convex lens collimator for expanding beam and coupling, and a low frequency for light pulse modulation is introduced.
利用平-凸透镜准直器作扩束耦合光学系统，采用低频斩光器实现光调制。
The change of chlorophyll fluorescence in flag leaves of indica rice was analysed under light and temperature stress and during recovery by PAM pulse modulation fluoremeter.
用PAM脉冲调制荧光仪分析籼稻剑叶在光温胁迫和恢复期间的荧光变化。
It operates both in current mode at high output load and in pulse frequency modulation (PFM) at light load to reduce the power dissipation.
它在重载下工作于电流控制模式，轻载下工作于脉冲频率调制(PF M)模式来降低功耗。
A pulse frequency modulation (PFM) circuit for retinal prosthesis, which generates electrical pulses with frequency proportional to the intensity of incident light, is presented.
提出了一种用于视网膜修复的脉冲频率调制电路结构。
The HVDC light is a new DC transmission technology based on voltage source converter(VSC)and pulse width modulation(PWM)technology.
建立了基于电压源换流器（VSC）的高压直流（HVDC）（VSC-HVDC）输电系统的标幺值数学模型。
HVDC Light is a new HVDC transmission system, based on Voltage Source Converters (VSC) and Pulse Width Modulation (PWM).
轻型直流输电是一种新型的直流传输技术，采用电压源型(vsc)换流站以及PW M控制技术。
HVDC Light is a new HVDC transmission system, based on Voltage Source Converters (VSC) and Pulse Width Modulation (PWM).
轻型直流输电是一种新型的直流传输技术，采用电压源型(vsc)换流站以及PW M控制技术。
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