near net shape 中文意思是什麼
near net shape
解釋
準精化-
Three - dimensionally braided structural composites have distinct structure that is fully integrated, continuously spatial fiber - network impregnated with ductile material. the new innovative materials have not plies as conventional composites have, and put an end once and all to low interlaminar strength showing in laminate materials. because of their enhanced stiffness and strength in the thickness direction, near - net - shape design and manufacturing, superior damage tolerance and specified aerospace function, the braided composites are gaining more and more attention of industry and academia
三維編織結構復合材料是完全整體、連續、多向的紡線（纖維束）的網路，充填以延性材料，這類新材料已失去通常復合材料的層合板概念，由此，層合板復合材料層間脆弱的致命弱點在編織結構復合材料中得到克服，所以編織結構復合材料具有高的強度和剛度（包括在厚度方向） ，接近實際形狀的製造，高的沖擊韌性、高的損傷阻抗，和按實際設計要求的特定的航空航天方面的使用功能，因而廣泛地受到工業界和學術界的關注。 -
Abstract : the present state and the facing problems faced by iron steel industry in china in course of growing strong are discussed. the analysis of the iron steel industry in 21 century shows that there will bea situation of three pairs of production routes. the technological development of smelting reduction near - to - net shape continuous casting of similar products will make iron steel industry with a new look in the future
文摘:論述了我國鋼鐵工業發展現狀及向鋼鐵強國奮進面臨的問題，分析展望了21世紀鋼鐵工業將呈現三種同時並存的局面，預示熔融還原和近終形連鑄技術的發展將使鋼鐵工業面貌一新。 -
Spray deposition is a new kind of near - net shape metal forming technology which is used to manufacture rapid solidification advanced materials with the characteristics of uniform composition, high density, low oxygen tension and small degree of segregation
噴射沉積技術是制備快速凝固高性能材料的新型金屬近成形技術，沉積坯件具有成分均勻、組織細化、緻密度高、含氧量低、偏析程度小等特徵。 -
Important advantages are still achieved in cycle time reduction and the ability to cast near net shape castings with minimal porosity
最大的優點仍是減少生產周期，並且能鑄造出含有最少量氣孔的鑄件。
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