母線室 的英文怎麼說
中文拼音 [mǔxiànshì]
母線室
英文
busbar chamber-
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 hydropower station has occupied the very important position in improving chinese energy sources construction, and with the increase of the size of the hydropower plant, its ventilation and air conditioning systems will be more complex
水電站地下洞室群在通風時，是一個由交通洞、廠房、母線洞、主變洞、出線道、進風洞、排風洞等洞室以及各專門布設的送排風管道系統組成的通風系統。This layout can stop the internal arc fault expansion ; can avoid harmful moisture, small animal and dusty interferences. it also has good perfomiance and high reliability. because the heat cannot transmit to the outside of the bus room, a good operation environment for the low space can be obtained
主母線室置於箱體頂部一個單獨的金屬封閉的間隔內，並與10kv開關室、儀表室等間隔相互獨立，為同類產品首創；這種結構可以防止內部電弧故障的擴大化，避免「火燒聯營」事故；防護性能好，防潮、防小動物侵害、防積塵，運行可靠；由於母線室的隔熱作用，為下層空間創造了一個較好的運行環境。The irregular posterior fossa mass that is seen here near the midline of the cerebellum and extending into the fourth ventricle above the brainstem is a medulloblastoma
不規則顱后窩腫塊即髓母細胞瘤，在小腦中線附近並且延伸至腦干之上的第四腦室。分享友人