The COP of the system also can be increased by using efficient compressor with low compression ratio.
采用特殊设计的在低压比下高效运行的压缩机，能够大幅提高系统的性能系数；
Pluse compressed radar has a high pluse compression ratio for target signals, but low compression ratio for not matched jamming signals.
脉冲压缩雷达对目标回波具有很高的压缩比，而对不匹配的干扰信号则压缩比很小。
The experiment shows that the embedded zerotree coding method can be used in the case of nonseparable wavelet transform and has good PSNR at low compression ratio.
实验表明嵌入式零材编码方法可以用在非分离型二维子波变换情况，在低比特率时有很好的巅值信噪比PSNR。
It offers high compression ratio and low complexity.
它具有高压缩比和低复杂性的特点。
JPEG2000 is a new image compressing standard, it has the characteristic of high compression ratio and low distortion.
JPEG2000是一种新的图像压缩标准，具有高压缩率、低失真度和灵活高效的特点。
MPEG4 is a video coding technology with the characters of high compression ratio, low requirement for transmission bandwidth and high quality of image.
MPEG4是一种压缩率高、对传输带宽要求低、图像质量高的图象编码技术。
As the Roots pump is a non-vacuum inside the compression, the compression ratio is usually very low, so high, medium and vacuum pumps need to pump before.
由于罗茨泵是一种无内压缩的真空泵，通常压缩比很低，故高、中真空泵需要前级泵。
But there are some shortage of ordinary single-stage heat pump in low-temperature environment, such as high compression ratio, devoid heating power and low efficiency.
但普通单级空气源热泵热水器在低温环境下运行中存在压缩比过大、制热量不足和制热效率太低等问题。
Experiment results show that in low bit rate environment, the new image compression scheme performs better than JPEG in the aspects of perception and PSNR (Peak Signal Noise Ratio).
实验结果表明该算法在低码率下，相比jpeg，获得了在视觉效果和峰值信噪比方面更好的恢复图像质量。
The experiment shows that MPEG-4 was higher compression ratio and better image quality at same compression ratio. Compared with MPEG-2, it is more suitable for low-bit network ratio.
实验结果表明MPEG - 4较MPEG - 2具有压缩比高、同压缩比下图像质量更高等优点，更加适用于信号的低码率网络传输。
The selection of the initial shift register of M-sequence is a key technique in pulse compression waveform design whose pulse compression waveform must have low peak power and large compression ratio.
二相编码波形设计中初始移位寄存器的选择是个关键技术，它直接决定了信号波形在满足最小峰值功率下能否具有最大脉压比。
The soft soil has many unfavorable project properties such as high water content, high void ratio, low permeability, huge compression index, small anti-shearing intensity and thixotropic.
软土具有含水量高、孔隙比大、渗透性小、压缩性高、抗剪强度低、触变性显著等不利的工程性质。
The experiment results show that this PCA algorithm can get the same compression ratio as the KLT algorithm with low complexity.
实验结果表明，该方法完全可以达到与K-L变换相当的压缩效果。
The experiment results show that this PCA algorithm can get the same compression ratio as the KLT algorithm with low complexity.
实验结果表明，该方法完全可以达到与K-L变换相当的压缩效果。
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