回零 meaning in English

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Microchemical apparatus - volumetric analysis - specification for burettes with pressure - filling device and automatic zero
微量化学仪器.第d集:容量分析仪器.第1部分:带压力加注装置和自动回零的滴定管规范
Loess is silt - sized aeolian deposit and is mainly composed of quartz and feldspars , its osl signals can be set to zero by exposure to light
黄土作为一种风积物，主要矿物是长石和石英，光释光信号在搬运漂浮于空中时可以被阳光曝晒“回零” 。
That is why more and more people pay more attention to it . the technology applied in resonant dc link inverter ( rdcli ) is one of soft switching technologies . it makes the current or voltage in dc bus return zero periodically ; through resonant technology in the circumstance of switching change
作为软开关技术的一种应用? ?谐振直流环节逆变器,在直流环节利用谐振技术使母线电压或电流周期性地回零,为开关在换流时刻提供零电流或零电压条件,从而达到降低开关损耗的目的。