立柱直徑 的英文怎麼說
中文拼音 [lìzhùzhíjìng]
立柱直徑
英文
column diameter-
It is 19. 5 meters high and 15. 6 meters around at the base. built entirely of wood, the vault is supported by eight pillars. the roof has no beams but only a great number of brackets entwined within each other
它高19 . 5米，底部直徑15 . 6米，全木結構，殿頂由8根立柱支撐，頂無橫梁，由眾多斗拱上疊，天花板層層收縮，構成美麗的穹窿式藻井。With the development of coastal and offshore engineering, the local scour problems are paid more and more attention. however scour in the vicinity of large scale structures founded on seabed have caused destruction to the foundations since the problems have n ' t been studied extensively. based on the principles of local scour around seabed founded large diameter cylinders caused by both waves and currents, the flow and scour processes are investigated in this paper after summarizing and consulting lots of papers and researches existing currently
隨著近海及海岸工程的不斷發展，近海及海岸工程建築物基底附近的局部沖刷問題也逐漸引起關注、重視與研究，但是對波流共同作用下海床上直立大直徑圓柱建築物周圍的局部沖刷研究較少，因而使得坐落在海床上大尺度建築物基底常常受到沖刷而致使基礎受到破壞。Changing the diameters and fixing angles of milling cutter can meet the machining requirements of helical surface. this method has been applied in the process of manufacturing twin - screw in rubber and plastic mechanics, which simplifies the process route and shortens the prepare time in production and at the same time saves the cost and improves technical and economic benefits
通過改變圓柱立銑刀的直徑和加工安裝角度來滿足螺旋面的加工要求，該方法已在橡塑機械用同向雙螺桿的加工中得到應用，縮短了加工工藝路線，減少了生產準備時間，節約了加工成本，取得了良好的技術經濟效益。In this paper, micro - cavity semiconductor laser ( mcsl ) with pillar vertical - cavity surface - emitting structure ( vcsel ) which has potential applications in optical communication and optical interconnect is theoretically analyzed, the calculation model that used to discuss the modal performance of rectangular columnar and cylinder vcsel with oxidized aperture is established by using vector field model. the numerical simulations in the case of cylinder structure show oscillating wavelength and threshold gain against inside and outside radius of laser, the layer refractive index and pair number of bragg mirror, thickness, position and oxidized material ' s refractive index of oxidized aperture, in detail. more practically, considering dos shell of laser as non - perfect one, or supposing that dos shell is separated from the laser, we can obtain more significative results
本工作以矢量場模型出發，對具有誘人應用前景的柱形垂直腔面發射結構（ vcsel ）的微腔半導體激光器（ mcsl ）進行了理論分析，建立了用於分析方柱形和圓柱形結構具有氧化孔徑層的激光器的模式特性的理論模型；對圓柱形結構情況進行了數值模擬，得到了振蕩波長、閾值增益隨激光器內外半徑、 bragg反射鏡層折射率、周期數以及氧化孔徑層厚度、位置和氧化物折射率的詳細變化規律；為使理論計算更接近實際，將外加金屬包殼視為非理想導體，或將金屬包殼與激光器結構隔開，分別對這兩種情況下的結果進行了討論。Based on the data on scour around large diameter cylinders exposed to waves and currents, effects of every kind of sea enviromental parameters on maximum scour depth are analyzed and guided by dimensional analysis and multidimensional linear regression, an equation is given to compute maximum scour depth around large diameter cylinders in combined waves and currents. compared with some other equations, this equation is more accrete, simpler and clearer and the compute d results are in good agreement with experimental ones
本論文主要是在總結國內外研究成果基礎上，從波浪與水流共同作用下海床上直立大直徑圓柱建築物周圍的局部沖刷機理出發，研究和探討了圓柱周圍的沖淤形態；分析各種海洋環境參數對最大沖刷深度的影響，並利用已取得的實驗資料，採用量綱分析原理和多元線性回歸分析方法，建立一個波流共同作用下海床上直立大直徑圓柱建築物周圍的最大沖刷深度計算公式。According to the characteristics of these diameters and new gps regulations, some corresponding evaluation models of these diameters were built using section measuring method of the cylindricity
根據這些直徑的特點，依據圓柱度截面測量法建立了相應的評定模型。分享友人