機加工開裂 的英文怎麼說
中文拼音 [jījiāgōngkāiliè]
機加工開裂
英文
machining crack-
Uses : used in the manufacture of persulfate ; used in the manufacture of aniline dyes ; used in the treatment of oxidized metal surface ; used as the initiator for the polymerization of monomers ; used in decoloring and bleaching of oil, cleaning and deodorization of deteriorating barm, accelerating ripening agent ; used as additive for under - well fracturing in petroleum mining
用途：用於製造過硫酸鹽的製造；用於苯胺染料的製造，甕染料的氧化發色劑；用於氧化金屬表面處理；用於有機合成工業中，高分子物聚合的引發劑；油的脫色和漂白，變敗酵母的洗滌，脫臭，小麥的催熟劑；石油開採用于井下壓裂的添加劑。This paper mainly aims at the strategic demands for large - aperture lightweight mirror proposed by high - tech development. its main research contents are : select material blank for lightweight mirror according to physical and chemical properties of optical glass ; analyze and calculate the deformation quantity of the mirror with finite element method ; design and optimize mirror body structure of 400 lightweight plane mirror and 450 lightweight spherical mirror, analyze glass cutting principle, design specisl - use grinding wheel structure, select reasonable technological parameters to implement the processing of weight reduction holes on 400 plane mirror ; analyze etching mechanism of hydrofluoric acid, look for the technological parameters such as the optimal acid concentration and etching time etc. ; eliminate the stress of weight reduction holes and micro - cracks on 400 lightweight plane mirror ; discuss the processing principle and
本論文的研究主要是瞄準國家高技術對大口徑輕型鏡的戰略需求而開展的。主要研究內容是：根據光學玻璃的物理與化學性能，選擇輕型鏡坯材料；用有限元法對鏡子的變形進行分析、計算，找出變形規律，優化設計400mm輕型平面鏡、 450mm輕型球面鏡鏡體結構；分析玻璃切削原理，設計專用磨輪結構，選擇合理工藝技術參數，完成400mm平面鏡輕量化減重孔的加工；分析氫氟酸腐蝕光學玻璃機理，尋找最佳酸濃度、腐蝕作用時間等工藝參數，實現400mm平面鏡減重孔應力與微裂紋的消除；討論分離器加工原理和工藝技術特點，完成400mm平面輕型鏡面形加工。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。In this paper, according to the reaction of deformation and crack of pavement caused by the non - uniform settlement and the whole stability between the new & old embankment after widening the used road on soft ground, based on the study of settlement and stability of soft ground, the author systematically analyzed the mechanism of geosynthetics in the widening pavement structure, and presented a whole settlement computing method of reinforced embankment in widening structure with the theory of soil mechanics
本論文將利用土力學的相關理論，針對軟土地基上舊路加寬后，在新舊路基間所出現的不均勻沉降和新舊路基整體結合強度不夠而引起的路面變形、開裂等現象，從軟土地基沉降和路基穩定性入手，系統分析了土工合成材料在加寬路基結構中的作用機理，並初步提出了加寬道路加筋路堤沉降計算的一整套方法。分享友人