Multimedia technique conduct and actions is a kind of forerunner ' s teaching means , already extensively applied in physical teaching , make use of its advantage well during the period of using , but also want as far as possible influence of avoiding the bad situation , make it real to become the assistant in the physical teaching 摘要多媒体技术作为一种先进的教学手段，已经广泛应用于物理教学中，在使用过程中充分利用它的优势，但同时也要尽量避免劣势的影响，使它真正成为物理教学中的助手。
At first the article puts emphasis on analyzing those current network ip technology , various audio codec algorithms , realtime stream medium transmit technology and those process mechanism of realtime low bandwidth audio stream medium , etc . in allusion to high requirement of system , resulted from so many terminations of attending a lecture , rate of flow , bad situation of network and realtime interactive voice , a new algorithm and the relevant project of processing low bit - rate audio stream was brought forward 本文着重分析了当前网络方面的ip技术，各种音频编码算法，实时流媒体传输技术，实时低带宽音频流媒体的处理机制等等。针对网络实时应用中诸如客户端众多，各种多媒体数据流量大，网络状况差，语音交互实时性等方面较高的要求，提出一种新的实时低带宽音频流处理算法及相应的处理方案。
So , to summary and study the mountain tunnels construction and monitoring technology in time , especially have a deeper understanding of the bad situation in the tunnel construction and grasp the successful experience and failure lesson from the tunnels already built up could provide important reference details and decision basis for newly built project , and also it is necessary for building up highway tunnels economically and high qualifiedly 因此，及时总结和研究山岭隧道施工和监控技术，深入探讨隧道施工中各种不良现象产生的原因，掌握已有隧道的成功经验和失败教训，才能为新建的工程提供重要的参考资料和决策依据，对经济地、高质量地建设公路隧道十分必要。
To adapt to the need of the stock market , intelligent analysis become main means to change the bad situation of stock analysis . in the paper decision support system ( dss ) is introduced to stock analysis . the paper deeply researches the data mining and how to apply it in the stock analysis . first , the paper introduces the background , definition and architecture of traditional dss and the development of dss as well as data warehouse , data mining 论文首先分析介绍了决策支持系统产生的背景、定义和传统决策支持系统的体系结构及决策支持系统的发展概况,以及决策支持系统的相关技术数据仓库、数据挖掘等技术,阐明了建立决策支持系统和数据仓库系统为证券分析智能化服务的必要性和可行性。
