Main observation and conclusion DNA circuits have been designed for implementation of various functions based on DNA str......

文中介绍一款四路超声波倒车雷达系统,让开车人士能更好地实现停泊车和倒车入库,系统设计采用STC12C5A60S2作为核心控制器,利用超......

0 引言　　为了满足现代通信与雷达系统中高效率与高功率的需求，毫米波固态功率合成技术越来越受到挑战。毫米波频率范围内，由于固态......

There exist many problems in producing four-way valve of HPb59-1 alloy for an air-conditioner by traditional solid state......

Pure lines derived from multiple parents provide abundant variation for genetic study.However,efficient genetic analysis......