瞬时动态 meaning in Chinese

transient behavior

The system has 6 . 8mhz digitalizing bandwidth and 70db instantaneous dynamic range , which can be obtained by using rf / if converter vxi3570 , high precision digitalizer e1437a and proper signal processing arithmetic
系统数字化带宽设计为6 . 8mhz ，选用rf if变换模块vx13570 、高精度数字化仪e1437a和适当的信号处理算法可获得70db以上的瞬时动态范围。
The status quo of high - resolution data acquisition system is discussed and by studying the character of high - resolution seismic exploration and seismic signal , the theoretical models and character of each unit are gained . this paper point out that under 1000 meter ' s depth where petroleum is embedded the idr of central controlled seismic instrument and telemetricseismic instrument are lower than 70db which ca n ' t meet the needs of high - resolution seismic exploration
文章论述了当代高分辨率地震数据采集系统的现状，对高分辨率地震勘探及地震信号特点进行了研究，得出了高分辨率地震勘探数据采集系统的理论模型和各功能单元的理论特性，指出在石油与天然气埋藏的千米以下的地层，集中式数字地震仪和24位遥测地震仪的瞬时动态范围均不超过70db ，远远满足不了高分辨率地震勘探的需要。