Labor and social security resource database system based on DB trichotomy method
基于三库分离技术的劳动保障资源数据库系统

Experiments conform that the DB propellant can fulfill the demands of the starter.
实验表明所选的双基推进剂能满足该起动器对装药的要求。

This enables ease of changing the persistence layer to a nonrelational DB as well.
这能够简化将持久层修改为非关系数据库的过程。

The dB absolute error and dB relative error in electronic measurers are introduced.
介绍了电子测量仪器中的分贝绝对误差，分贝相对误差。

We have selected a 12 dB crossover filter with good transient response and minimum phase shiftings.
采用12分贝交迭滤波器, 瞬时响应能力好, 相移最低。

While only a small improvement, approximately 2 dB per leaf, could be gained by adding an extra leaf.
此时，增加一层板仅有较小之提高，约2分贝。

The electric field intensity decay is 40 dB per decade of distance in near field of a magnetic dipole.
磁偶极之近场辐射电场强度随距离每增十倍衰减四十分贝。