等徑他形的 的英文怎麼說
中文拼音 [děngjìngtāxíngde]
等徑他形的
英文
equant anhedral-
The conclusions indicate that trl outperformed the control group in attitude, ability, and knowledge, these two instructional forms have prominent differentiations, the research has the conclusions that : a ) trl can nurture students " attitude towards learning, enrich students " knowledge, increase their ability and making them integrating learning strategies, b ) trl can promote students " co - operative learning, make them explore actively, and it is effective to foster mutual understanding and friendship between the han nationality and the minor nationality, c ) trl can set up an learning environment to achieve students " learning aims, such as nurturing attitude, stimulating motivation, increase students " knowledge level, d ) trl is an effective way to enhance students " learning abilities, such as information - collecting, question - probing, problem - solving, e ) trl is an important way to integrate school education with social environment, to
因此在中等職業學校實施研究性學習，不但十分必要，而且完全可能，其目的在於改變學生以單純地接受教師傳授知識為主的學習方式，為學生構建了一個開放的學習環境，提供了多渠道獲取知識、並將學到的知識加以綜合應用於實踐的機會，促進他們形成積極的學習態度和良好的學習策略，培養了他們的多種社會實踐能力，以便於他們能更好地適應21世紀發展的需要。本研究以哈密地區衛生學校2001級（ 1 ）班社區醫士專業學生為實踐對象；以小組合作研究為組織形式；以課內與課外相結合為實踐途徑；以強調對所學知識、技能的實際運用，注重學習的過程和學生的實踐與體驗為實踐的總目標；以進入問題情境階段、實踐體驗階段、表達和交流階段為一般程序。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The pattern of shoujinliao ' s climatic design : first, it talks about shoujinliao ' s ventilation, analyses every stale belong to each compose of space appeared in shoujinliao. sum up that ventilation system is made up by draught and wind route, by showing data and photograph, then, it talks about shoujinliao ' s methods of sunshade and heat insulation, that is, sunshade of concentrated, sunshade of small yard, sunshade of eaves, sunshade of balcony. heat insulation of outward wall, clay tiled roof and composition neatly
著重分析手巾寮結合氣候的模式，首先談及手巾寮建築通風經驗，深入分析各種空間高低組合情況下手巾寮的通風情況，藉助調研資料和實景照片對通風系統中通風口和風道的合理安排進行介紹；其次是手巾寮其他氣候經驗，如遮陽方式主要體現在連房密集遮陽、小天井遮陽、檐下灰空間遮陽、陽臺遮陽等，又如隔熱途徑有墻體隔熱、灰泥苫背瓦屋面隔熱及規整形隔熱，再如綠化水體的降溫措施，上升到環境高度看待建築，探討手巾寮組織天井綠化、利用街巷綠化、配合周邊水域的建造經驗。Nuclear particle track - etched anti - counterfeit marking is a new weapon against fake products. the mark is manufactured by intricate high technology in state - controlled sensitive nuclear facilities which ensures that the mark can not be copied. the pattern of the mark is characterized by its permeability, and can be distinguished from fakes by using a transparent liquid ( e. g. water ), colored pen or chemical reagent. the technique has passed the official health safety examination and poses no danger of nuclear irradiation
用核粒子照射塑料薄膜形成徑跡，再經化學試劑蝕刻和成像技術，得到由微米級微孔組成的圖案.這種圖案具有物質透過特性.用這種方法生產的核徑跡防偽標志，具備核尖端技術不易擴散，製作設備不易得到，產品用其他方法難以偽造，防偽識別簡單、快速、可靠等特點.此種標志已經通過放射性安全檢測，可以用於各種商品（包括食品）的包裝5, comparatively computation analysis is carried out among pcc pile and cast - in - situ concrete circular pile and prefabricate concrete square pile by program which is develop in the paper. two angles such as the same diameter and transect area of the pile are analysed. the advantages of the pcc pile have been proven on the aspects of technique and economy in the paper
5 、將pcc樁和工程中常用於承受水平荷載的灌注圓形樁及預制方形樁進行了對比計算分析，從相同的樁徑和等效的截面積兩個角度論證了pcc樁在承受水平荷載時的技術經濟的優越性，從對比分析中證明了pcc樁優于其他樁型的薄壁性能。Motivated by the practical requirements of robot path planning, a generalized constrained optimization problem gcop with not only logic and but also logic or relationships was proposed and a mathematical solution developed previously. this paper inherits the fundamental ideas of inequality and optimization techniques from the previous work, converts the obstacle avoidance problem into a semi - infinite constrained optimization problem with the help of the mathematical transformation, and proposes a direct path planning approach without cspace calculation, which is quite different from traditional methods. to show its merits, simulation results in 3d space have been presented
他們在早期的系列研究中： 1提出了更一般的非線性優化問題generalized constrained optimization problem ，簡稱gcop ，即約束間的邏輯關系不但有「與and 」的關系，而且還有「或or 」的關系，並給出了在實際應用中可行的數學求解方法2利用了計算機圖形學中的constructive solid geometry csg方法來構建障礙物的不等式表述3將計算機cad中的插值方法與優化理論結合半無窮維優化，克服了路徑規劃問題中的局部最小值問題。分享友人