工商管理畢業(yè)論文(中英文摘要)精選合集-wenkub.com
2024-10-21 10:26 本頁面
【正文】 要求With the development of the light railway,the noise pollution bees very important barrier,an effective and paratively inexpensive measure of controlling noise,will be developed to some ,people pay more attention to the light railway to install the sound barrier effectively so as to make the noise reduction more effective has bee an urgent research with the analysis of the noise reduction principle,this paper studied the influence of light railway sound barrier on light railway’s noise reduction effect in the three aspects：height,position,sound absorbing page have worked out two precepts,the source is infinite line source,which use shall 03 shape of Germany(the centye of the railway)。方案一,聲屏障高4m,（A）～（A）；方案二,（A）～（A）。聲屏障作為一種降低交通噪聲有效而經(jīng)濟的方法,將會在一定程度上得到發(fā)展。pays attention to the tight slope land sector and the gentle slope land sector decides the line request and decides the line skill, in design process between, because two stands has a bigger elevation difference, therefore in order to reduce the volume of excavation the quantity and strives for the maximum elevation, the line uses an greater slope uphill, and the attention causes the straight line and the curveinter coordination, the full consideration clamps the straight line to be gentle and the length of curve request。平面定線過程中，根據(jù)坡度的變化，注意緊坡地段和緩坡地段的定線要求及定線技巧，在設(shè)計過程中，由于兩站之間有較大的高程差，所以為了減少挖方量和爭取最大高程，線路采用較大的坡度上坡，并注意使直線與曲線相互協(xié)調(diào)，充分考慮夾直線和緩和曲線長度的要求；縱斷面設(shè)計中，注意最大坡度、坡段長度、坡段連接與坡度折減等問題，在變坡點處應(yīng)合理設(shè)置豎曲線 ；在平面坐標計算程序設(shè)計中，對兩種方法進行比較，采用Fortran語言編制計算程序；在橫斷面設(shè)計過程中，考慮曲線地段路基面加寬等問題。但伴隨著旅游業(yè)的快速發(fā)展，各種旅游經(jīng)營者盲目開發(fā)建設(shè)、監(jiān)管部門保護不力以及旅游者對旅游環(huán)境的破壞等，導(dǎo)致我國旅游資源遭到了極大的破壞，其原有的內(nèi)涵與價值正在逐步降低直至消失。本文以廣播新聞為切入點，由挖掘互動廣播新聞的內(nèi)涵入手，分析了廣播新聞節(jié)目為何要互動的原因以及互動的途徑，通過對其前景所作展望得出結(jié)論，互動確實是廣播新聞發(fā)展的必然選擇。關(guān)鍵詞:零售業(yè) 連鎖超市 比較 措施
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