切断低压;
A study of cutoff properties of low permeability reservoirs
低渗透油层物性下限研究
The base and emitter transit time increase and the cutoff frequency decreases at low temperature due to the trapping effect of shallow energy level impurities.
而由于浅能级杂质的陷阱效应,低温下基区和发射区渡越时间变长,截止频率下降。
A new control approach is presented with a "local strain compensation" and a low cutoff frequency inertial link feedback in place of the differential one.
提出了局部激励应变补偿和把通常的微分负反馈改为低截止频率的惯性环节正反馈的控制新方案。
Development of a Low Melting Point Alloy for Green Thermal Cutoff
环保型温度保险丝用易熔合金的研制
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