For the problem of carrier recovery in DS-SS communication, the model of dual PLL is presented, which is designed based on the auto -adapted algorithm.
针对直接序列扩频通信中的载波恢复问题，提出了一种基于自适应算法设计的双pll载波跟踪方法。
Remote auto meter reading technology with low voltage power lines carrier is a new technology which has a wide application foreground.
低压电力线载波远程抄表技术是一项有广泛应用前景的新技术。
Takes nc transformation of CA6140 type common lathe as an example, has explained the structure, installation and principle on automatic tool changing of auto-rotating tool-carrier.
以CA6140型普通车床的数控改造为例，介绍了自动回转刀架的结构、安装和换刀控制；并且对自动回转刀架常见故障与排除提出了意见和措施。
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