有圓孔的 的英文怎麼說
中文拼音 [yǒuyuánkǒngde]
有圓孔的
英文
round meshed-
In this paper the floral ontogeny and the ovary development of rivina humilis l. were observed. the results showed that ( 1 ) the tepal primordia initiated in 2 / 5 spirals. the abaxial one initiated first, then the adaxial one, finally the lateral two initiated nearly simultaneously. the third one initiated on the position near the first tepal, and there is a gap between itself and the second tepal. ( 2 ) the 4 stamineal primordia initiated in one whorl at the same time. ( 3 ) the carpellary primordium initiated from the abaxial side of flower primordium ; the carpellary primordium grew upwards and towards axis after it was formed, therefore an elliptic orifice was formed at the adaxial position of ovary, which was the remainder of the mouth of ovary before the ovary was fused completely. with the ovary maturing, the orifice was narrowed because of the ovary growth, at last fused completely. the gynoecium is composed of a single carpel. ( 4 ) in the series developmental sections of ovary, the ovular primordium was initiated on the adaxial meristem when the mouth of ovary was formed
對數珠珊瑚的花器官發生和子房的發育過程進行了觀察.結果表明: （ 1 ）數珠珊瑚花被呈2 / 5螺旋狀發生，遠軸側的1枚先發生，其次為近軸側的1枚發生，最後側方的2枚花被幾乎同時發生，第3枚花被在靠近第1枚的位置發生，第2枚和第3枚之間有1個空隙; （ 2 ） 4枚雄蕊是同時發生的; （ 3 ）心皮發生於分生組織的遠軸側，心皮原基形成后，向上向軸生長，在子房成熟前在近軸側非正中位形成1個孔，該孔為心皮最終愈合前的殘跡，到子房成熟時，因子房的生長孔被擠壓縮小，在進一步的生長過程中愈合.子房由1枚心皮構成; （ 4 ）從子房發育過程的切片看，該植物的胚珠是在子房發生后不久發生的，子房上的圓孔形成時，從近軸側的分生組織發生胚珠原基，由胚珠原基分化出珠被與珠心Some of them are of advanced ones, such as 5 - face grinding machine, electronic beam perforator, vacuum brazing equipment, curvic coupling grinding machine, controlled atmospheric quenching over, 4 - axis and 5 - axis nc milling machines, equipment for multi - component impregnation, heavy - duty grinder and high speed broacher, etc
擁有先進的五面磨床電子束打孔真空釬焊圓弧端磨可控氣氛淬火爐和四軸五軸數控銑床以及多元共滲強力磨削快速拉削等一批先進加工設備。Examination shows that the heart of andrias davidianus have three chamers - two atria and one ventride, the atria on the left of midline, the ventricle on the right of midline, and the atria are divided into two cavities by septum interatriale. there are four valvula semilunaris in conus arteriosus, but no spiral valve in conus arteriosus. the coronary artery is made by arterica carotis externa branches
研究結果表明，中國大鯢循環系統解剖學特點為： 1 .心臟：心房心室為左右排列，兩心房前後排列，共有4對動脈弓，其中第二、三對動脈弓匯合成一條背主動脈；動脈圓錐基部與心室相接處有4個瓣膜，動脈圓錐內沒有螺旋瓣，動脈圓錐與腹側主動脈干之間有3個半月瓣；房間隔有穿孔；冠狀動脈由頸外動脈的分支匯合而成。English, french, spanish, portugese, georges, and louises, doubloons and double guineas and moindores and sequins, the pictures of all the kings of europe for the last hundred years, strange oriental pieces stamped with what looked like wisps of string or bits of spider s web, round pieces and square pieces, and pieces bored through the middle, as if to wear them round your neck - nearly every variety of money in the world must, i thin, have found a place in that collection ; and for number, i am sure they were like autumn leaves, so that my back ached with stooping and my fingers with sorting them out
其中有英國的金基尼雙基尼，法國的金路易，西班牙的杜布，葡萄牙的姆瓦多，威尼斯的塞肯，有最近一百年歐洲各國君主的頭像，有古怪的東方貨幣，上面像是縷縷細繩張張蛛網有圓的有方的，有中間帶孔的，好像可以串起來掛在脖子上。我估計差不多世界上每一種貨幣都被搜羅全了。至於數量，我相信大概跟秋天的落葉一樣多，我總是彎著腰，手不斷地整理著，一天下來弄得疲憊不堪。Abstract : it is proved that a small circular aperture has the positive and minus focal distances, and the research experiments for small aperture glasses are introduced concisely
文摘:提出了證明小圓孔具有正、負焦距的一種方法，簡要地介紹了關于小孔眼鏡的實驗研究This thesis primarily makes below the work of a few aspects : ( 1 ) the method to append the section line in the geological section plane and the geological plane graph intersected each other ; ( 2 ) the principle and method that automatic determinate of orebody on transverse section with the neural network theory was presented, and draw the slippery boundary of ore ; ( 3 ) the method that drawing the surveying well and lane way engineering in the geological and survey graph ; ( 4 ) the method to automatic calculation and statistics output ore reserves and grade ; ( 5 ) the method that automatic creating the geology cross section of the hole ; this thesis realizes automation for managing geological graph based on the substantive research work
本論文主要作了以下幾個方面的工作： （ 1 ）提出了在相交平面圖和剖面圖中添加剖面剖切線的方法； （ 2 ）提出了應用人工神經網路理論確定剖面中礦體界線的理論和方法以及礦巖界線圓滑的原理與方法； （ 3 ）實現了礦山生產實測工程數據處理與地測圖件的有機結合； （ 4 ）實現了礦塊地質品位和儲量的自動計算和統計輸出； （ 5 ）提出了中深孔炮孔排面地質剖面圖自動剖切的原理和方法。本論文在大量研究工作基礎上，實現了地測圖件管理的計算機自動化。The 3d finite element analysis of a plat with a small hole
平板開小圓孔應力集中的三維有限元分析A patch antenna with etched holes on the ground plane is also studied. the performance of the antenna at the resonant frequency is analyzed by using the fdtd method together with the pml boundary treatment. the results show that the surface waves are suppressed greatly, the bandwidth is improved and a 1 odb reduction on the sidelobe level is achieved at the 110 and 260 directions in the e plane
全面地研究了地面腐蝕周期圓孔結構的電磁晶體貼片天線在基波頻率處的性能，用fdtd方法並結合pml邊界處理技術對該天線所取得的研究結果顯示，本文設計的地面腐蝕型電磁晶體結構抑制了貼片天線中的表面波，增加了天線的帶寬，並有效地削弱了旁瓣，使天線的e面方向圖上110和260方向的兩個旁瓣被削弱了10db 。Disk chuck has been adopted in 74 series vertical shaft rotary die grinders, which can grind to the internal hole, excircle of large workpieces and workpieces with shoulders. die can work and grind to r - arc without removing guede - pole, and grinder head can rotate in the range from + 45o to - 45o. accordingly, the life of die is longer than before and accuracy of the die is stable
74系列立軸圓臺模具磨床採用花盤式工作臺，可對較大工件內孔、外圓和帶有臺肩的工件進行磨削，沖模模具可以不拆導向柱進行磨削及r弧磨削，提高模具使用壽命，保證模具使用精度，磨頭可旋轉45 。Results showed that the pollen grain of p. mira, which is used as material by sem for the first time, was nearly elliptic in shape and the extine pattern was simply striped with no pores
結果表明，光核桃花粉粒的形態呈橢圓球形，其外壁紋飾呈簡單的直紋平行型，無穿孔，是最原始的桃亞屬植物野生種，未發現與栽培種有直接的關系。A simply and analytical formula of the axial light intensity distribution behind a circular aperture is derived by using the helmhotz - kirchhoff integral theorem and the kirchhoff ' s boundary conditions. it is studied the nonparaxial on - axis intensity distribution throughout the whole space behind a circular aperture. an accurate formula to calculate the fresnel number of circular aperture is presented and the validity of usual fresnel number formula is reexamined. by using the analytical formula and diffraction integral formula, some numerical simulation comparisons are done, and it is shown that the results of the two methods are completely coincident
用亥姆霍茲-基爾霍夫積分定理和基爾霍夫邊界條件，推導出了平面波經小圓孔非傍軸衍射時軸上強度的簡單解析表達式，研究了平面波經小圓孔后整個衍射空間非傍軸的軸上光強分佈.給出了計算圓孔菲涅爾數的精確公式，重新檢查了通常的菲涅爾數公式的有效性.數值計算顯示，應用解析表達式所得的結果與應用衍射積分公式所得的結果完全一致A simple and effective method is given to successfully simulate circular and different serrate type aperture ' s far - field diffraction and compared with the diffraction of hard - edged circular apertures
摘要採用一種簡單有效的方法，模擬了光束經圓形孔徑和不同齒形光闌的遠場衍射分佈，並與經圓孔硬邊光闌的衍射作了比較。Abstract : reviewed are five methods for the analysis of the penetration of jacked - in piles, namely, cavity expansion method, strain path method finite element method, slip line method and calibration model test. after analysis, it is pointed out that it is more rational to adopt sub - statical spatial axisy numerical formulas based on traditional plane - strain cavity expansion method in the analysis. after spatial closed - form solutions are obtained for soil movements, stresses and initial excessive pore pressures generated durihy pile penetration are found out. it is suggested that finite element analysis together with centrifugal model test be used in verifying the results
文摘:在分析飽和粘土中靜壓樁的貫入機理的基礎上，對靜壓樁沉樁分析的圓孔擴張理論、應變路徑法、有限元分析、滑移線理論和模型槽試驗等五種方法逐一進行評述，並提出在傳統的平面圓孔擴張理論基礎上加以改進，採用準靜態空間軸對稱方程組對靜壓樁貫入過程進行模擬，從而得出土體位移、應力、初始超孔壓的空間解析解，同時採用有限元分析、模型槽試驗相互印證的研究方法Independent air hating system, oven with sealed round hole array with hot air curtain, automatic oven temperature detector and control, dro, application of second time reflex of heat energy and centralize waste discharge result in energy and cost saving
獨立的熱風加熱系統，密閉式圓孔陣列風幕式熱風乾燥烘箱，烘箱溫度自動檢測控制、數字顯示，熱能二次迴流利用，集中排廢裝置，有效地降低能耗、節約成本。Coated abrasives - plain discs with holes for dust extraction
砂布.帶有排塵孔的平的圓盤砂布The ancient piece of jade is a kind of jade article flat to be round with round hole, the round hole among them, it is " good " to be called in ancient times
這是故宮收藏戰國時期一件很珍貴的玉璧。璧是一種有圓孔的平圓形的玉器，其中的圓孔，古代稱為"好" 。The regular script sharp gauze production factory attendance “ township of the chinese silk screen ”, this factory manager the time is engaged in the gauze and silk screen ' s production and the sale, my factory product specification is complete, quality excellent, including : the stainless steel mesh, the ectrowelding net, the heavy hexagonal network, the ore strainer, the metal net, the round hole net, the security net, the copper screen, the steel plate lattice - work, the ginning network, the safety net, cancel the flowered net, the extra wide net, the window screening, the guard rail net, the road guard rail, the railroad guard rail, the airport guard rail, the factory railing, the garden guard rail, the black cloth and silk, to breed the cage to have, the plastic even net, the galvanization silk and so on each kind of silk screen, widely uses in professions and so on petroleum, chemical industry, building, spinning and weaving, medicine, aviation, astronautics
楷銳金屬絲網製品廠地處「中國絲網之鄉」 ，本廠長期從事金屬絲網及絲網的生產和銷售，我廠產品規格齊全，質量精良，主要有：不銹鋼網、電焊網、重型六角網、礦篩網、金屬網片、圓孔網、防盜網、銅網、鋼板網、軋花網、安全網、勾花網、寬幅網、窗紗、護欄網、公路護欄、鐵路護欄、機場護欄、工廠圍欄、花園護欄、黑絲布、養殖籠具、塑料平網、鍍鋅絲等各種絲網，廣泛用於石油、化工、建築、紡織、醫藥、航空、航天等行業。The outline of fiber ' s tip has very great influence on the coupling efficiency. it is reported, using the way of grinding and melting to form a microlens on the fiber ' s tip, can increase fiber ' s numerical aperture, reduce the ellipticity of laser, and improve coupling efficiency
光纖端面的形狀對耦合效率有很大的影響，有文獻報道，採用拋磨燒熔等加工方法，可在光纖端面形成一個微透鏡，增大光纖的數值孔徑，對入射激光進行橢圓度校正，從而提高耦合效率。An analytical expression of stress concentration factor for a finite wide plate with an eccentrically placed circular hole
含偏心小圓孔的有限寬板條孔邊應力集中系數的一種解析表達式Expressions of stress concentration factors for an eccentric circular hole in a tension orthotropic finite - width strip
拉伸正交各向異性有限寬板偏心圓孔的應力集中系數表達式分享友人