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词汇
之前
释义
之前
之前
[zhī qián]
1.
■
before; prior to; ago:
5年之前
five years ago;
在她动身之前
prior to her departure;
开会之前
before the meeting;
临走之前
prior to departure; before departure;
两周之前
two weeks ago
随便看
高频参数 {半} high-frequency parameter;
高频双极晶体管 high-frequency bipolar transistor;
高频反馈 HF feedback; RF feedback;
高频发射管 vapotron;
高频发热电极 applicator;
高频发生器 {电子} radio-frequency generator;
高频发生装置 high-frequency generating apparatus;
高频发电机 ultrasonic-frequency rotory generator; alternator transmitter;
高频变压器 high-frequency transformer;
高频变换器 high-frequency converter;
高频可控硅 high-frequency thyristor;
高频同轴电缆 coaxial cable for high frequency;
高频吸收器[装置] high-frequency absorber;
高频品质因数 high-frequency figure of merit;
高频响应 high-frequency response;
高频响应传感器 high-frequency response pick-up;
高频噪声 high-frequency noise;
高频四极管 high-frequency tetrode;
高频地震法 high-frequency seismic survey;
高频堵漏 high-frequency plug;
高频塑料热合机 high-frequency plastic welder;
高频塞 high-frequency plug; HF plug;
高频塞孔 high-frequency jack;
高频增益提高电路 high peaker;
高频增益降 {半} high-frequency gain fall;
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更新时间:2025/1/31 6:18:08