難加工性 的英文怎麼說
中文拼音 [nánjiāgōngxìng]
難加工性
英文
unworkability-
Removing the beany flavor is the key to success in improving the product grade in the process of soybean milk
脫除豆腥味的問題一直是豆乳加工過程中提高產品感官質量的關鍵性技術難題。High accuracy kdp crystal optics is now considered as one of optics that is the most difficult to be processed for its series of disadvantageous characteristics to optics processing such as anisotropy, soft nature, easy to deliquesce, high brittleness, sensitive to temperature change, easy to crack and so on. therefore the long machining period, low percent of pass and astaticism quality has become the bottleneck of icf technology, and the surface quality control of kdp crystal processing has become the key problem to be solved in the research of icf in our country
Kdp晶體零件是目前公認的最難加工的光學零件之一，因為kdp晶體具有各向異性、質軟、易潮解、脆性高、對溫度變化敏感和易開裂等不利於光學加工的特點，所以加工周期長、合格率低、質量不穩定成為慣性約束聚變技術的瓶頸， kdp晶體超精密加工表面質量控制問題已經成為我國慣性約束聚變研究中亟待解決的關鍵問題。As an advanced materials preparation technology, spray - deposition has shown remarkable superiority in producing large - sized alloys and metal matrix composites. however, the spray deposeted preforms usually contain a certain quantity of porosity. besides, the oxide films on the surface of the particles lead to week metallurgic conjunction between the particles. in order to obtain an ideal structure and performance, the porous preforms need further densifying and plastical forming. in this paper, a new technology named wedge pressing was used to densify spray - deposeted 5a06 aluminium alloy, in which the large deformation can be obtained through the sum - up of local deformation and multi - step small deformation. this method can also solved the problems in traditional processing and greatly decreased the producing cost. what ’ s more, the reserch on the wedge pressing desification rules about the large - sized spray deposeted preforms was significant it was vital not only to the further densification of the prefoums but also to the further research on plastical deforming the research was also benefit to the industrialization an the application of the spray deposeted porous materials
坩堝移動式噴射沉積技術作為一種先進的材料制備新技術，在制備大尺寸合金及金屬基復合材料方面具有顯著的優越性。然而噴射沉積坯件特別是大型坯件通常存在一定量的孔隙，顆粒表面存在一定量的氧化膜，顆粒之間未能完全達到良好的冶金結合狀態，因此需要進行后續緻密化和塑性變形才能獲得理想的組織和性能。本文採用一種新型的楔形壓制工藝，即通過局部變形、多道次小變形累積實現大變形的緻密化加工方法，對噴射沉積多孔坯料進行后續緻密化和塑性變形，很好地解決了傳統加工工藝的難題，大大降低了生產成本。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Under the complex loadings, the surface flaws of large complex structures and the original defects of materials would initiate the propagation of micro three - dimensional ( 3d ) cracks, and result in catastrophic accidents. for the limitations of the traditional theories of two - dimensional cracks, the safety of actual structures containing 3d cracks cannot be guaranteed completely without the out - of - plane stress constraint
復雜應力作用下，宏觀復雜結構表面加工質量和材料本身固有缺陷以及外來損傷等會引起三維裂紋的萌生、擴展，最終導致災難性的破壞，而傳統二維裂紋理論在解決實際三維裂紋問題時出現不足，無法完全保障結構安全。Sintered ndfeb has excellent magnetic properties with low price while the strength and toughness are poor which result in poor machinability, and it is easy to be broken. so they can not be used in areas with impact
但是，這種材料強度和韌性差，機械加工困難，應用過程中容易掉角開裂，特別是在一些有沖擊振動載荷的領域應用受到限制。Although authroware releases the multi - medium staff from the trivial programming work, then have them devote all their efforts to the new conception and the art processing, yet it is not an easy way to the ordinary consumers even if to the advanced ones to use the authorware ' s variable and function agilely
雖然authorware將多媒體開發者從繁瑣的編程工作中解放了出來，使開發人員能把主要精力投入到構思創意和藝術加工上，但事實上，如果開發者對authorware這個創作平臺了解不多或者不深的話，要製作出結構清晰、界面友好及交互性強的多媒體作品並也不是件很容易的事，能將authorware變量、函數（特別是外部函數）靈活應用更是困難。Abstract : the rigid aid _ support fixture is presented for solving the problems of manufacturing thin wall and suspended workpieces of instrument and meters, which are elastically deformed and thus difficult to machine to the accuracy
文摘:為解決儀器儀表中薄壁件、懸伸件彈性變形大，加工精度難以保證的問題，設計了一種剛性輔助支承夾具。In the production of the copperplate rolling, the fluctuation with thickness of supplied materials, the disparity of the material performance, the deviation of actually used apparatus, external interference and apparatus change of spare part, etc. can not make traditional pid control set up accurate mathematical model, reach the ideal control result. thus, the precision of copperplate products can ’ t meet the demands far away
在銅板軋制生產中，由於帶材來料厚度的波動和材料性能的不均勻性，實際使用的設備偏差性、外界的干擾和設備零部件的變化等都會使傳統的pid控制很難建立其精確的數學模型，達不到理想的控制效果，這樣會使銅板加工成品的精度遠遠達不到要求。Some can build commercial goods directly, eliminating the need for molds, dies and machining, but most products still struggle to match the mechanical, thermal, durability or low - cost properties achieved by traditional manufacturing
有些機器可直接製作商品，完全不需要模具和加工，不過大多數產品在力學與熱學特性、耐用程度和成本等各方面，還是難以和傳統加工產品抗衡。As far as background knowledge is concerned, the dramatic influencing factors are calculation concept, formula, law, the four - form - mixed - calculation. the factors that attribute greatest to convenient calculation are concept, formula and law. in the personal factors, age and gender do n ' t influence learning strategy significantly, which indicates the traits of primary students " learning strategy development are different from that of middle school students
回歸分析結果表明，在心理影響因素中，內源動機、課程勝任感、課程困難應對和內歸因影響顯著，其中內源動機的影響力最大；在知識背景影響因素中，運算概念、公式、定律和四則混合計算影響顯著，其中以運算概念、公式和定律因素對簡算貢獻力最大；在個人變量中，年齡和性別對學習策略無明顯影響，體現出小學生不同於中學生學習策略發展的自身特點；對不同類型學校的考察表明，小學兒童數學學習策略的發展與加工機制研究學校是影響學習策略發展的至關重要因素。Thermoplastic phenol - formaldehyde resin bond synthesized by solution po1ymeization is commonly used in making diamond grinding wheel, which has disadvantages such as : absorbing moisture, difficult mixing, can not being long term store, needing curing agent, and giving off dangerous gas
目前，金剛石樹脂砂輪普遍採用溶液聚合熱塑性酚醛樹脂作結合劑，此結合劑存在著易吸潮結團、混料困難、不易長期存放，需加固化劑才能固化，且固化過程中有大量的有害氣體溢出，使用時需要加工成粉末等缺點。If they are not to be disposed suitably in construction, it might lead to the results of increasing project construction cost and maintenance cost, shortening the longevity of building, and being unsuitable for use
如果應用不當，將會導致增加工程造價與建築維護費用、縮短使用壽命、高層建築適用性差等後果，使得鋼結構技術難以在大量性建築中推廣應用。The president s support for more " flex - time " arrangements is designed to appeal to married women in the workplace, who often feel less pressure for extra pay than they do for extra time with their families
總統對增加「彈性工作時間」的安排表示支持，旨在吸引已婚的職業女性，她們經常感到想要和家人多待一會兒比獲得獎金還難。Under this background the engineering practice shows that the traditional design method of a drum wall could be conservative. such designing method often leads to a thicker drum wall which causes not only difficulties for welding drums " bending and machining, but also let increase the machines " own weight, i. e. reduce the effective performance of the cranes
但工程實踐表明，起重機捲筒傳統的設計計算方法偏於保守，用傳統方法設計現代起重機械的起升機構，會導致捲筒壁厚增加，這樣不僅對焊接捲筒的彎曲、加工帶來困難，而且往往會加大設備自重使起升機構工作性能降低。Vegetable industry in shandong also has many problems that can not be neglected : for example in producing and sale in china, we faced many problems such as more productions less sale, fierce competition, difficulty in circulation, less market information, less farmer organization in vegetable industry and etc. in export. it is faced that bad sanitation safety and bad commercial property, limitation about foreign green technical barriers and processing technology lag ; in vegetable science and technology and universal lectures, maladjustment in vegetable science situation and development of vegetable, large gas in vegetable producing technical standards and production standards, lacking of medi - organizations, strengthening the education in agricultural popularization and so on are confronted
山東蔬菜產業也存在許多不容忽視的問題:在國內產銷方面，主要面臨量增賣難、競爭激烈、蔬菜流通難度加大、優質化進程緩慢、市場信息不暢、菜農組織化程度低等;在蔬菜出口方面，主要面臨衛生安全和商品性不佳、國外綠色技術壁壘限制、蔬菜產后處理及加工技術滯后;在蔬菜科技和科普方面，主要面臨蔬菜科技工作現狀與產業發展不相適應、蔬菜生產技術標準和產品標準的制定差距較大、科技中介組織缺乏、農技推廣體系和蔬菜科普培訓有待加強等。Therefore water jet is a good unconventional tool for hard, fragile and very difficult to cut materials, e. g. composite, concrete, ceramics and stone materials etc
高速水射流尤其適用於高硬度、高脆性難加工材料、復合材料、鋼筋混凝土、陶瓷、石材等的切割加工。Advanced properties include high resistance to heat and cold, non - flammability, superior adhesion, and machine - ability
產品還包括有較高的抗熱性和抗寒性、難燃性，良好的粘著力和易加工性。A superalloy double helix integrated impeller with good performances of dimensional precision, microstructure and mechanics was rapidly manufactured by hpdm ( hybrid plasma deposition & milling ) method proposed by author ' s, laboratory, which synthesized plasma deposition as an additive technology, and milling as a subtractive technique during the processing
摘要採用等離子熔積與銑削復合製造技術，在等離子熔積成形過程中復合銑削精整，試制了難加工高溫合金雙螺旋整體葉輪樣件，其組織性能和力學性能均高於採用傳統工藝加工獲得的葉輪。On the basis of surveying of the relative literature about the modification of pvc, two kinds of fibers were used to improve pvc, the light, low cost / wood fiber / pvc composites were made. using diabase fiber instead of glass fiber reinforce pvc in order to resolve the difficult process problem. the wood fiber was treated, the configuration and the mechanical properties of the wood fiber / pvc composite were studied
本文在查閱了大量國內外有關聚氯乙烯（ pvc ）改性的文獻資料的基礎上，採用兩種纖維對pvc進行了改性研究，用木纖維改性pvc制備輕質低成本的pvc材料，用輝綠巖代替玻璃纖維擬解決玻璃纖維增強pvc製品難加工的問題。分享友人