闸门式振荡计数器 gated oscillator counter

低频振荡计算 low frequency oscillations

振荡计时器 oscillator timer

自振荡计数管 self-quenched counter tube

控制振荡计数器 gated oscillator counter

振荡粘度计 oscillation viscometer

石英晶体振荡压力计 quartz crystal oscillator gauge

振荡式密度计 Oscillation-type density meters

振荡型密度计 Oscillation-type density meters