Discusses the optimizing process of treatments of the main technical problems , which include the construction schedule , the field plan and t he balance of earth and rock works , method of the river closure and cofferdams sections , procedure and time of the river colsure , form of the cutoff , construct ion of the cut - off walls 论述了三峡大江截流及二期围堰实施过程中的施工进度计划、料场规划与土石方平衡、截流方式与围堰断面形式、截流进占程序和时段、防渗形式、防渗墙施工等主要技术问题的优化完善过程
From the 26th of august to the 2nd of september , from the day of borodino to the entrance into moscow , all that agitating , that memorable week , there had been that extraordinarily beautiful autumn weather , which always comes as a surprise , when though the sun is low in the sky it shines more warmly than in spring , when everything is glistening in the pure , limpid air , so that the eyes are dazzled , while the chest is braced and refreshed inhaling the fragrant autumn air ; when the nights even are warm , and when in these dark , warm nights golden stars are continually falling from the sky , to the delight or terror of all who watch them 自八月二十六日起，至九月二日当天止，从波罗底诺战役到敌人进占莫斯科，这整个惊惶的可堪记忆的一周的全部日子，都是不寻常的令人吃惊的大好秋光，低垂的太阳照耀得比春天更温暖，在爽朗明净的空气中，万物闪闪发光，令人目眩，呼吸这沁人的空气，令你心胸振奋而舒适，就连夜晚也是温暖的，在这一周的漆黑而温暖的夜里，不时从天上撒落金色的星星，真令人又惊又喜。
Consulting about foreign study , the research showed that the speed of firing can be improved by modifying the machanism of the automatic , and at the same time two problems must be solved , one is that more mechanisms should act at the same time to reduce the time of the whole actions of automatic mechanisms , the other is that the time of each mechanism ' s action should be reduced . the time can be reduced by several ways . the first one is to reduce the mass of mechanism , the second one is to increase the force applied on the mechanism and reduce the resistance , the third one is to shorten the working distance , the fourth one is to give abstention and cushion to mechanism before action ends . this thesis includes the following topics : discussion of the theory of the automatic and shell - swing design , establish the kinematic and dynamic models of the main structures in automatic and perform the corresponding mechanical analysis , set up a compendious cyclical diagram for the automatic ; the computer simulation to the navy gun ' s firing parts 由现有舰炮自动机循环图可知，制约射速提高的几个因素是：后座、复进占用的时间较长，约占总循环时间的三分之一；供弹机的动作单独占用循环时间，且较长；输弹机的输弹时间较长；各机构动作重叠少；参考国内外的研究情况，本文提出了在采用改进完善现有自动机机构来提高射速时，必须考虑以下两点： ( 1 ) 、力求在同一时间内能使更多的机构参与工作，并处理好各动作之间的衔接(即接口技术) ，以便缩短整个自动机的动作循环时间。
