cutting problem 中文意思是什麼
cutting problem
解釋
剖線問題-
Disigning coolant channel on the firebox of liquid rocket engine to loxodrome ( equal - angle helix ) groove can improve firebox coolant capability greatly. because the width dimension of loxodrome groove is narrow and the depth is deep, some machining methods are incapable, such as end - milling or electrochemistry. according to the peculiarities, a cnc disk - cutter - milling method which is composed of five motion axes with four simultaneously interpolated ones is researched. because most firebox generatrix is composed of complex curves, it is very difficult to get cnc cutting program with manual means. in order to deal with the problem, the loxodrome mathematics model is studied, and an auto - programming software system is developed. the software system can generate cnc cutting program of loxodrome on many kinds of turned surface. the constriction - distension segment of firebox is the most representative workpiece. the sharp changing of its generatrix slope makes loxodrome milling difficult. with the theory analyzing and practice cutting experiment, some applied techniques, which include milling mode and direction, choosing cutter diameter and cutting start point setting, are developed. adopting the technology above, tens regular workpiece have been manufacturing. the two - year manufacture practice has confirmed the validity and feasibility of developed loxodrome coolant channel milling method. the developed technology is also worth to be referenced to other similar workpiece
將液體火箭發動機燃燒室的冷卻通道設計為斜航線（等傾角螺旋線）槽形，可以大幅度改善燃燒室的冷卻性能.斜航線冷卻槽的槽寬尺寸較小而槽深尺寸較大，所以無法使用棒銑刀銑削、電化學等加工方式.針對這些特點，提出了五軸控制、四軸聯動的數控片銑刀銑削加工方法.由於燃燒室外表面的母線輪廓復雜，手工編制數控加工程序難度大.為了解決數控加工程序的編制問題，研究了斜航線的數學模型，開發了自動編程軟體系統.使用該系統，可以生成多種母線輪廓回轉體外表面上的斜航線數控加工程序.燃燒室收斂-擴張段的母線斜率變化大，加工難度大，是斜航線冷卻通道加工的最典型工件.經過理論分析和實際切削實驗，研究了針對該類型工件的片銑刀直徑選擇、銑削方式和方向、刀具調整和起刀點的設置等多項實際的加工方案.採用上述的一系列技術，已經成功地加工了數十個合格工件.經過兩年多的實際生產過程應用，驗證了所開發的斜航線冷卻通道加工方法的正確性和可行性.這些加工技術的研製成功，對其他相似類型零件的加工亦具有參考意義 -
Apart form volatile organic compounds, dust from polishing, sanding, cutting and grinding materials can be a problem. this can cause nasal and eye irritations, headaches, dizziness, nausea and even breathing problems
除了揮發性有機化合物外，磨光、切割或打磨建築材料時所產生的塵埃亦會造成室內空氣污染，令人出現眼鼻刺痛、頭痛、頭暈、惡心，甚或呼吸困難等毛病。 -
At present, the subsidy level of public health care services by the government public spending is 98 per cent and this gives rise to budget deficit faced by the hospital authority ( ha ). though many cost - cutting measures are in place, if the problem of budget deficit is not properly dealt with, the public health care system will be on the verge of bankruptcy
因為現時公共醫療服務，百分之九十八是由政府公共開支補貼，形成醫院管理局（醫管局）有入不敷支的財政赤字，雖然已多方面開源節流，但若不改善現有財政赤字，公共醫療系統會瀕于破產。 -
Relating closely to the main problem of the high sidewall and wide span underground cavities excavation stability of xiluodu hydroelectric project, the evolution characters of geo - stress field in deep - cutting gorge and the whole features of the stress field, strain field and plastic failure zone around the underground chambers after excavation are studied systematically in the dissertation, based on a great deal of data gathered in field investigation and taking the flac3d v2. 0 software as basic computation tools. meanwhile, in the course of research, the new methods of dynamic numerical simulation are summarized and applied. furthermore, the effects of rock mass qualities, initial geo - stress field and excavation procedure on surrounding rock mass stability are discussed
本文緊密結合溪洛渡水電工程大跨度、高邊墻復雜地下廠房洞室群，施工開挖過程中和開挖后圍巖穩定性研究這一重大課題，在詳盡的野外地質調查工作和對大量基礎地質資料的整理與分析基礎上，以目前國際工程地質界公認的最新通用軟體flac ~ （ 3d ） 2 . 0版作為基本計算工具，從整個壩區地應力場的研究開始，通過動態數值模擬分析這一新的模擬思路，系統地研究了深切峽谷區地應力場多階段的特徵和演變規律，進而對左、右岸地下廠房洞室群開挖全過程中圍巖應力場、變形場和塑性破壞區的變化特徵，進行了全過程動態數值模擬研究，並詳細討論了圍巖質量、初始地應力場、施工開挖順序對大型地下洞室群圍巖穩定性的影響。 -
This dissertation also analyzed the problem of casually cutting grading angle, which fluently happens in construction of slope engineering
通過對施工中經常遇到的坡角臨時切割問題進行分析，結果表明。 -
Based on analyzing the mathematical models for one - dimensional cutting stock problem, a greedy algorithm has been constructed, which is an approximate algorithm
摘要在對一維下料方案數學模型分析的基礎上，提出了一種基於貪心演算法的求解方法。 -
In order to solve this problem a new method of dealing with corn rootstalk is put forward and a new model of no - tillage planter equipped with cutting corn rootstalk and residue mechanism has been developed. systematical experiments about the performance of the mechanism and the theory of cutting corn rootstalk and residue have been conducted in this paper, and significant research achievements have been obtained
目前生產中所應用的普通免耕播種機，還沒有針對處理玉米根茬所設計的破茬裝置，在有玉米根茬的未耕地上直接播種時就存在破茬能力差，將種子播在根茬上，或將玉米根掀出形成大坑等問題，嚴重影響播種質量。 -
His integrity and his analytical brilliance in cutting to the core of a problem were awesome.
他為人正直，他分析問題抓住要害的才能令人肅然起敬。 -
Several key techniques of carving and milling machine cnc system are deeply studied they include : the transformation, data rebuild and interface design of huge volume nc program produced by cam ; the algorithm of cubic parametric spline pre _ interpolation and high speed real time interpolation in the cnc system, which. will gain a much higher surface precision and cutting speed ; methodology and algorithm of movement velocity acceleration control on a real time forecast _ and _ prejudge basis is designed. therefore, a smooth movement is insured. the shake and noise problem caused by non _ uniform pules for driving stepping or servo motor is solved by an improving algorithm to generate uniform pules
同時，本文對基於統一的pc平臺的雕銑機數控系統中的幾項關鍵技術進行了深入的研究，包括： cam生成加工程序的傳送、接收、讀取及其加工鏈表的生成和實時重構；對cam生成的離散數據進行三次參數樣條插值和基於累加弦長的三次參數樣條插補控制，保證加工工件表面的精度和光順性；設計具有「前瞻」功能的自動升降速控制方法，保證加工過程的平穩性；通過脈沖均勻化，有效地解決加工過程中因為脈沖不均勻而引起的震動問題。 -
Argues that equal charge for equal thermal comfort is a basic point to treat the impartiality of heat charge that for residential apartments, an impartial treatment of the heat charging problem is much more important than enhancing precision of the heat meter, that the heat used to heat metering and charging should be an equivalent heat. that to deal with charging problems by recklessly cutting off an end user from the heating system would only damage the heating companies ' benefits, and that any system which satisfies household room based adjustment should be adopted
摘要等舒適度等熱費是解決熱用戶熱費公平問題所選定的一個分析問題的基點；解決公寓類住宅熱用戶的熱費公平問題，比提高熱量表的計量準確度等級更重要；計算熱用戶熱費的熱量應是當量熱量；供暖系統鎖閉改造，受損害的是改造者；能滿足分室調節的任何一種系統形式均可以採用。 -
The minimum erathwork of slope cutting is regarded as target function, and the anticipated factor of safety of slope as a constraint condition, so this problem is equivalent to optimality one with constraint conditions. thus the optimal scheme of slope cutting can be obtained
這里將最小的削坡土方量作為目標函數，將預期的邊坡安全系數作為約束條件，把削坡問題等價於一個有約束的優化問題，可找出最優的削坡方案。 -
Based on the analysis of the features, key procedure and research tendency of various algorithms for cutting stock problem, this paper proposes that the increasing of material utility ratio can not be reached by solving cutting stock problem only. a integrated solution should be resolved from both management and application optimization technology in view of system engineering
通過分析各排樣演算法的特點、關鍵步驟與研究趨勢，本文從系統工程的觀點出發，指出提高材料利用率不僅僅只是一個排樣問題的求解，而是要從下料生產管理和優化技術方法兩個方面同時入手，建立完整的解決方案。 -
While few would object to the inclusion of fighting, cutting classes and disrespect for teachers into the discussion, it is arguable that boys - like girls should be labeled as " problem students "
把打架、曠課、對師長不敬等行為列入討論范圍內，那是不會有多少人反對的，然而把男性化的女生貼上「問題學生」的標簽，卻有很大的爭議。 -
This paper points out that it is efficient to code the string of index of the parts in adopting ga to solve cutting stock problem after analyzing the features and research tendency of ga. this paper presents suitable operators of selection, crossover and mutation for the coding method. these operators are used in the calculation of one - dimensional and rectangular cutting stock problems
本文為這種基因編碼設計了實用的選擇、交叉、變異遺傳運算元，並將其用於一維下料方案優化問題、矩形件排樣問題的求解；討論了不同工藝要求條件下的適應度定義方法，並用四川大學博士學位論文計算實例驗證了其尋優效果。 -
The paper dealt with the optimal design problem of stock layout patterns of saw cutting blanking for rectangular pieces of a single size, proposed a kind of optimal layout method of rectangular pieces of a single size, pointed out the mathematical basis, selective conditions of the optimal solution and layout disposal of the particular solution
摘要討論單一尺寸矩形件鋸切下料排樣方式的最優設計問題，提出一種單一尺寸矩形件優化排樣方法，給出這一排樣方法的數學依據、優化解的選擇條件和特殊解的排樣處理。 -
The primary source of excess atmospheric carbon dioxide is fuel burned for transportation and the making of electricity. cutting down the world s forests adds to the problem, as the harvested trees can no longer take carbon dioxide from the air. bbc s world edition also discussed the rising acidity of the world s oceans
由於交通運輸和發電而燃燒煤礦和石油所產生的廢氣，是造成大氣中二氧化碳過多的最主要因素，而濫砍森林亦使得問題更趨嚴重，因為這些被砍伐的樹木再也無法吸收消化空氣中的二氧化碳。 -
But the problem of structural deficits cannot be solved, in the long run, by cutting expenditure alone
長遠來說，單憑縮減開支是絕不可能解決結構性財赤的問題。 -
In this paper, a new dynamic programming algorithm for unconstrained 2d stock cutting problem is presented
摘要本文給出了一種求解無限制板材下料問題的動態規劃解法，對該演算法的計算復雜度進行了分析。 -
And these strategies are applied to the nesting cutting problem of circular blanks
並將其中一些策略應用於我們研發的圓形套裁下料系統。 -
Based on the specialty of flexible processing enterprise, we designed and developed production planning system of processing err at last, a genetic algorithm based on variable length coding for the scroll cutting problem in production planning system is proposed
針對柔性流程企業生產計劃的特點，設計實現流程erp的排產計劃系統，並提出了一種基於變長編碼遺傳演算法以解決生產計劃中的紙卷切割問題。
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