1、

This dissertation studies the ground clutter suppression of ABSR. Because low pulse repetition frequency ( LPRF) and low side-lobe antenna are adopted, we focus on main-lobe clutter suppression.

本文主要研究机载战场侦察雷达的地杂波抑制,由于采用了低脉冲重复频率和低副瓣天线,我们主要考虑主杂波的抑制。

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2、

Main products: PM Separators electromagnetic pulse demagnetizer, electromagnetic magnetic re-election machine, computer automation system ingredients.

公司主要产品: 电磁永磁除铁器、脉冲脱磁器 、 电磁磁重选机 、 微机自动化配料系统.

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3、

The main symptoms of disease are palpitation, nervousness, untidy pulse rate, lack of strength, chest stuffy, and so on. 21.93% percentage objectors have no symptom.

症状方面主要表现为:心悸、心慌、脉律不齐、乏力、胸闷等,本组无明显症状者为21.93%。

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4、

In the area of aerospace telemetry, Pulse Code Modulation/ Frequency Modulation ( PCM/ FM) system is one of the main plans in strategic weapons and rockets because of its high noise resistance, high flexibility.

在航天遥测领域中,PCM/FM传输体制抗噪声性能强、灵活性高,是国内外战略武器和火箭等的主要遥测手段。

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6、

Main feature of Pulse-feeling: feeble pulse.

主要脉象是:虚脉,按之无力。

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7、

Pale tongue, thin white fur and weak pulse, the main performance.

以舌淡、苔薄白和虚弱性脉象为主要表现。

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8、

At October impounding time advance the ahead of impounding behind main flood season schedule. At ecology flooding pulse scheduling, reservoir must not let water out in uniformity, but make some flooding pulse to promote propagate of the four home fish and preserving species.

在洪水脉冲生态调度上,主要有汛前涨水期不能采用均匀放水原则,而要适时地进行洪水脉冲式放水,促进四大家鱼的天然繁殖和物种保存的生态调度措施;

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9、

The main error sources of pulse width measurement, including counter's repeatability, trigger level timing error, time base error, the amplifier hysteresis error, LSD displayed error, etc. are analyzed.

分析了脉冲信号源脉宽测量时的主要误差来源,包括计数器测量重复性、触发定时误差、时基误差、放大器滞后误差、分辨力误差等;

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10、

In high frequency range, the specular reflection echo have the same wave form as the incident wave, but in low frequency range or resonance scattering range, there is a time expansion of the pulse width after main reflecting echo from smooth curvature surface.

在低频或谐振散射区域,光滑曲率表面的脉冲镜反射回波特征是在主回波后有时间扩展,它是由曲率反射面产生的,称为回波的曲率效应;

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