preform 中文意思是什麼

preform 解釋
vt. 及物動詞 1. 預先形成[決定]。
2. 把…初步加工，對（寶石等）粗加工。
n. 名詞 初步加工的成品；壓片；雛形，塑坯預塑；（錄音用）盤料；經過粗琢的寶石。

  1. Study on preform of c c composites for aircraft brakes

    復合材料坯體結構的研究
  2. The factory specializes in manufacture of cm series fully automatic, semiautomatic bottle blowing machines, injection and blow mould, pet bottle preform and cap of various specifications and space cup etc with famous brand lonhon

    專業生產「龍宏」牌cm系列全自動、半自動吹瓶機、注吹模具、太空杯以及各種pet瓶坯，塑料防盜蓋等相配套產品。
  3. Preform technology of carbon - carbon composites nozzle exit cone

    炭材料出口錐預制體技術
  4. Three dimensional braiding preform reinforced resin composite is a new type of advanced composites and used in aircraft and space, transportation, construction, military project, medical treatment and physical education etc. 3 - d braiding composites will subject to long - term tensile force during applied process, which is a long - time creep process

    樹脂基三維編織復合材料是一種先進的復合材料，它已經應用於航空、航天、交通、建築、軍工、醫療、體育等領域。在應用過程中，三維編織復合材料會受到長期拉伸力的作用，這決定了它的使用過程是一個長期的過程，因此蠕變性能成為表徵其力學性能的一個非常重要的指標。
  5. In the planning of the hydroforming process, the paper analyzes a representative automobile part to build up the cae simulation model of tube bending, preforming, and hydroforming, and discusses the influence of different preform designs on the final shape of the tube

    在管件液壓成形製程規劃方面，本文選取了一具有代表性的汽車結構件進行分析，由原始的彎管、預成形、到液壓成形皆建立了cae模擬模式，並探討不同的預成形設計方式對管件最終成形之影響。
  6. Effects of preform structure on mechanical properties of carbon - carbon composite for nozzle exit cone

    噴管出口錐材料力學性能的影響
  7. For the purpost of thin and even wall thickness distribution, and mass production dialy, the molds for food packaging materials, such as pudding cup, airline cup, jelly cup, closeure, pet preform. . etc., have to be designed combining precision and hardness with hot runnet system in structure

    許多食品包裝器皿，如布丁杯、航空杯、果凍杯，瓶蓋、 pet瓶瓶胚等，由於其成品對于厚度及均勻度之要求相當嚴格，同時每日需生產龐大數量，因此其模具在結構上必須要求具有精密度高、硬度大、使用熱澆道系統等設計方可達到目的。
  8. For many experiments, using high pureness mma, controlling polymerization temperature and polymerizing condition under high - pressure nitrogen gas and heat treatment after polymerization, a transparent preform without any bubble and blemishes was prepared. then drawing this preform, gi - pof with diameter 0. 8 - 1. 0mm was obtained. because of the limitation of the experimental conditions and the shortage of the money, it is very regretted that we ca n ' t test the index profile and the loss of the gi - pof accurately

    在系統研究界面凝膠法原理和聚合機理的基礎上，通過多次實驗總結、改進，在制備過程中採用提高精餾效率、控制溫度、加壓聚合、氮氣保護和後期處理等措施，制備出無氣泡及銀紋缺陷、光潔、透明的光纖預制棒，拉絲得到直徑0 . 8 - 1 . 0mm的gi - pof 。
  9. According to the experiment of influences of fiber structures and the width of edge channel on flow filling, it was found that even a small gap ( l or 2mm ) between the preform and the mold edge could also disrupt the flow pattern, which evidently changed the local permeability of preform. the filling process was simulated using the permeability for different edge width predicted by a. hammami or poiseuille model, which shown good agreement with the experiment results

    實驗研究了纖維鋪層結構及流道縫隙的寬度對充模流動的影響，發現在纖維預成型體和模具壁間存在的較小的縫隙也會對邊緣的流動產生干擾，進而影響增強材料主體的滲透；對于不同的縫隙寬度，分別根據a . hammami模型和poiseuille模型預測邊緣等效滲透率，並進行充模過程數值模擬，與實驗結果吻合較好。
  10. In this thesis, the basic aspects about forming process and mould for cold precision rotary forging of common bevel gear are studied with method of theory and experiment. the rules and numerical relations of dimensional precision relaying among common bevel gear part, die cavity and tool electrode are established. meanwhile, the design and calculation methods for process parameters, mould, common bevel gear forging and preform and tool electrode are established

    本論文對傘齒輪冷擺輾精密成形工藝的若干問題進行了系統的理論和實驗研究，深入分析了傘齒輪冷擺輾精密成形工藝的物理力學本質，確定了傘齒輪產品零件?模具?電極之間的幾何尺寸精度傳遞規律和數值關系，建立了冷擺輾精密成形工藝參數和模具、傘齒輪鍛件和預制坯、工具電極的設計計算方法。
  11. Generic specification for optical fibre preform

    光纖預制棒總規范
  12. Futong group is the first enterprise in china that owns the intellectual property rights on optical fiber preform integration technology, spearheading the commercialization of optical fiber preform in the nation ' s project 863

    富通集團是中國首家掌握具有自主知識產權光纖預制棒全合成技術的企業，並承擔著國家863計劃中的光纖預制棒產業化新技術課題。
  13. Other preform rod manufacturing equipment

    預型體製造設備其他
  14. Preform rod polishing mechanics

    預型體研磨加工設備
  15. So creep property is an important guideline to characterize its mechanics performance. the research of three dimensional braiding preform reinforced resin composite ' s creep property was conducted systematically by this thesis with creep testing system, experimental analysis, theoretical analysis, and some new opinions and methods are proposed

    本文從樹脂基三維編織復合材料的蠕變測試系統，試驗分析、理論分析等方面，對樹脂基三維編織復合材料蠕變行為進行了比較系統的研究，提出了一些新的觀點、新的方法。
  16. Microstructure optimal design of the forging process preform

    面向微觀組織優化的鍛造工藝預成形優化設計
  17. Regarding the lcm filling process as the newton fluid through fibrous reinforcements, the permeability of preform determines the saturating of resin in fiber, and has effects on the curing process and the quality of products. based on the darcy ' s law, the theoretical model of permeability measurement was established. and the influence of different testing methods and major process parameters such as fabric structure, fiber volume fraction, injection pressure, flow rate and resin viscosity on preform permeability were investigated in details

    文中首先根據達西定律建立了滲透率測量的理論模型，深入研究了不同的測試方法及主要工藝參數（纖維織物織構、纖維體積含量、充模壓力、流動速度、樹脂粘度）對滲透特性的影響規律，發現多孔介質增強材料的滲透率主要取決于纖維織物的結構形式，預成型體孔隙分佈及其體積分數、壓實性對滲透率有較大的影響，提高充模壓力和流動速度可以縮短充模時間，在一定程度上可以提高滲透率。
  18. The best aluminum borate whisker preform fabrication process without any binder of superior quality magnesium matrix composite is presented by studying whisker washing ; whisker distribution ; preform taking shape ; preform drying and preform calcined technique

    通過對沒有任何粘接劑的硼酸鋁晶須，從晶須的清洗、晶須的分散、預制塊成型、預制塊烘乾及預制塊燒結技術方面進行了研究，提出了獲得用於制備鎂基復合材料的硼酸鋁晶須預制塊的制備工藝。
  19. At last, several suggestions are proposed : to design a new formula without public hazards ; to preform a toxicity eliminating design for existing toxic slurries ; to give the measures of implementing green chemical grouting including the respects of technique, equipment and environmental protection ; and to point several kinds of grouting matinals to be unsuitably used or carefully used, and to quick improve the techniques of prepolymerization and post - processing

    提出了按無公害要求設計新配方，對有毒害漿材進行去毒害改性設計，並通過採取工藝改造、設備更新、安全防護等措施來實現綠色化學灌漿的諸多辦法，並對不提倡用、應慎用和應改進預聚及后處理工藝的漿材品種提出了改進建議。
  20. It was found that the permeability of fibrous reinforcement mainly lied on the preform architecture. the distribution of void region and fiber volume fraction in the perform had important effects on permeability

    文中對lcm纖維增強材料預成型過程中常見的兩大纖維鋪敷缺陷? ?流道效應及剪切變形情況下的滲透特性進行了研究。
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