| 1. | The limited sensitivity of present pulsar surveys and the greater frequency drift make the more distant pulsars difficult to observe .
目前脉冲星普查的有限探测灵敏度和大的频率漂移，使我们难以观测到更遥远的脉冲星。 |
| 2. | Frequency drifts due to : dc voltage , temperature , vswr
频率漂移跟直流电压、温度、驻波比有关。 |
| 3. | Automatic frequency drift rejector
自动频率漂移抑制器 |
| 4. | It makes the analysis of signal twitter and modulation very easy and the measurement of frequency drift and converting very simple
它使信号的抖动分析、调制分析非常直观，使频率漂移测量、频率转换特性测量变得十分简单。 |
| 5. | This approach the problem of conquers phase excursion and frequency drift that anciently adopts fixed frequency filter and its frame is simple
这种方法克服了以往采用固定频率滤波器带来的相移和频率漂移问题，而且结构简单。 |
| 6. | At the same time the temperature coefficient of a dr could be positive or negative , and this may be used to compensate for the frequency drift due to temperature shift
同时, dr的谐振频率温度系数可正可负,这可以大大提高dro的频率温漂性能。 |
| 7. | The phase detecting error caused by local oscillator frequency drift and non - synchronization of measurement signal and gate signal is eliminated and the measurement speed is improved at the same time
该方法可以有效的消除因本振信号频率漂移及闸门信号与被测信号的非同步引起的测相误差,同时提高了测量速度。 |
| 8. | To compensate for low - frequency drift of the optical path - length difference and to keep the operation point on the most sensitive point , the reference mirror is adjusted with a actuator driven by a feedback loop
为了补偿光程差的低频漂移，将工作点稳定在灵敏度最高点，使用一个反馈控制系统驱动微位移器调整参考平面镜。 |
| 9. | Both ip - iq approach and id - iq approach need low pass filters , as a result the accuracy of harmonic current detection is influenced by frequency drift . moreover , they both can only be used in three - phase power systems
I _ p - i _ q法和i _ d - i _ q法都需要低通滤波器，因而会使谐波电流检测精度受到电源频率漂移的影响，而且这两种方法仅适用于三相电力系统。 |
| 10. | From some characteristics observed , such as the short lift time , narrow frequency band , fast frequency drift , quasi - periodic pulsation , spike event and complex magnetic structure , it is considered that the radiation mechanism of these events may be principally due to the electromagnetic waves magnified directly by the instable electronic cyclotron
从它们的观测特征：短寿命，窄频带，频率快速漂移，及尖峰事件与磁结构复杂的大黑子活动区密切相关等，认为这些事件的辐射机制可能是电子回旋脉泽不稳定直接放大电磁波所致。 |
