1) mud-pulse transmission
泥浆脉冲传输
1.
This paper introduces mud-pulse transmission,electromagnetic transmission,acoustic transmission and optical fiber transmission.
本文对泥浆脉冲传输、电磁传输、声波传输和光纤传输分别进行介绍。
2) mud pulse
泥浆脉冲
1.
The paper introduces three basic working styles of signal transmission of mud pulse MWD sys tern,pressure positive pulse, pressure negative pulse and continuous pressure wave.
介绍了泥浆脉冲随钻测量系统信号传输的3种基本工作方式:压力正脉冲、压力负脉冲和连续压力波。
2.
The generation and transmission principle of mud pulse in MWD system is analyzed.
通过分析ＭＷＤ系统中泥浆脉冲的发生和传输原理，考虑到信号下传的特点和井眼轨道闭环控制系统的要求，确定出地面信号下传系统宜采用负泥浆脉冲方式。
3.
The method of mud pulse transmission is mostly used in the wireless signal transmission system between downhole and surface.
目前,地面与井下信息的无线传输系统主要是采用泥浆脉冲方式。
3) mud pulse valve
泥浆脉冲阀
4) Pulse propagation
脉冲传输
1.
Based on coupled nonlinear Schr(?)dinger equations (CNLSEs) and the split-step Fourier method (SSFM), the ultrashort optical pulse propagation and switching in active three-core nonlinear fiber couplers are numerically investigated.
重点分析了在一阶色散耦合系数和二阶色散耦合系数的影响下,线性增益系数和有限增益带宽对脉冲传输和开关特性的影响。
5) pulse transmission
脉冲传输
1.
In this paper, a model of optical pulse transmission in single-mode fiber (SMF) is established in the presence of noise, and the mechanisms for breakup of chirped pulse with different durations are.
本文通过数值模拟方法求解单模光纤中有初始噪声输入情况下光脉冲传输的理论模型,研究了不同宽度啁啾皮秒脉冲的分裂机理,着重分析了噪声的非线性增长对啁啾脉冲分裂的影响。
补充资料：泥浆
1.泥土和水混合而成的半流体。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条