放電加工同 的英文怎麼說
中文拼音 [fàngdiànjiāgōngtóng]
放電加工同
英文
electric spark maching-
The second, at the high frequency primary coil, when switch turn on with control signal ( the spwm pulse is modulated ), in the positive or negative semi - period of low frequency modulation signal, transformer coil with same direction voltage. the magnetic flux of transformer core will increase step by step. at the end, it leads to magnetic flux saturation
二、在高頻變壓器原邊，當開關管接收控制信號脈沖列（經調制的spwm波列）導通時，在低頻調制信號的正半周或負半周內，施加在變壓器繞組上的是同一方向的電壓，變壓器磁芯中的磁通可能將級進地逐漸增加，導致磁芯飽和，造成磁偏或單向磁化，導致低頻電信號放大失真或由於很大的磁化電流而無法正常工作。This paper starts the research of the liquid floated pendulous accelerometer testing system according to the engineering. at first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu - lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band - pass filter, alternating amplifier, phase sensitive demodulatorn, pulse - width modulation, frequency scale circuit, moment current generator. finally, using the graphics program language labv - iew which is designed for testing field especially by ni accomplishes the solfware design of testing system, realized the testing functions
首先對加速度計及其測試技術的發展歷史和現狀，液浮擺式加速度計的工作原理和數學模型等作了簡要的介紹，然後確定了以二元調寬脈沖再平衡測試迴路為設計方案，並從控制理論的角度進行了分析，著重研究了系統中各部分的傳遞函數，利用系統開環傳遞函數分析了系統的穩定性，同時設計了系統的校正網路;分析了二元調寬脈沖再平衡測試迴路的解析度、采樣約束以及測試精度等基本問題，並按照系統分析的結果設計了包括前置放大、帶通濾波、交流放大、相敏解調、脈寬調制、頻標電路以及力矩電流發生器等測試系統各部分硬體電路，驗證了電路的正確性，最後按照測試系統的要求，採用了美國ni公司專為測試領域所開發的虛擬儀器工具? ? labview作為測試軟體開發工具，利用該圖形化編程語言完成了測試系統軟體部分的設計，實現了測試功能。Divides into the light work table and the heavy work table ; the assembly structure, the assembly simple, the intensity is high, the many kinds of work tables floor choice ( hangs taiwan and so in board, electric appliance board, lamp roof, baggage shelf part ), may coordinate the different operation requirements ; after installs the tool cabinet, can reasonably use the space, deposits the tool and the spare parts
工作臺：分為輕型工作臺和重型工作臺；組裝結構、組裝簡便、強度高、多種工作臺臺面選擇（掛板、電器板、燈頂板、擱板等臺上部件） ，可配合不同的使用要求；加裝工具櫃后，更能合理地使用空間，存放工具及零配件。The new government news and media information system gnmis, expected to be put into operation in 2004, will enhance the workflow in disseminating press releases with photos and other attachments in multimedia format electronically and automatically, through different distribution channels such as e - mail, fax and sms via mobile phone, as selected by the subscribers
預期新的政府新聞發布系統將於2004年投入運作。該系統可以加強以多媒體電子方式自動發放新聞稿圖片連附件的工作流程。登記用戶可選擇以不同方式例如電子郵件傳真或行動電話的簡訊息服務接收新聞稿和圖片。This product is a mini camera microsope with high cold brightness leds, it can magnify objects up to 30 ~ 50 times if extra lens are used, it can be used for shooting the teeth, hairs and skin in microscope, furthermore in other areas, such as maintaining machinery, inspecting tiny electronic components or repairing pcb board, and also used to observe insect, plant and flower in primary and junior high school teaching
本產品是帶冷光led燈照明的微型攝影機，可將被攝物體放大30倍以上（用附加鏡頭可以放大50倍） ，廣泛適用於口腔、牙齒、頭發、皮膚等部位的顯微放大攝影，同時可應用於工業領域，如機械維修、微小電子元件的觀察、 pcb線路板的檢查等；還可以在中小學教學中用於觀察昆蟲、植物、花卉等。Compared with other connection process, it has many advantages, such as simple technics, reliable connection strength, low cost and adapting to connect various kinds of materials etc. by means of increasing the capacitance and decreasing the voltage, we control the discharging energy and apply the low - voltage electromagnetic riveting ( lver ) process to rivets made of some widely used materials
同其他連接形式相比，其工藝過程簡單、連接強度穩定可靠、成本低並能適應于各種材料之間的連接。本文通過增加系統電容量和降低電壓的手段來控制放電能量，將低電壓電磁成形方法用於常用材料鉚釘的鉚接。Engineering drawing has always been labeled as a practical subject. a combination of geometrical, building. mechanical and electrical drawing, it relates between theory and the picture of reality. engineering drawing will provide an accurate and complete ptcture for every object tn terms of shapes and sizes. usually, it is taught using the face - to - face teaching mode even in an odl environment. due to its nature, some students may find difficulty in imagining and interpreting the drawings. however, the availability of sophisticated technology provides the opportunity for the learning of engineering drawing to be enhanced via online. a web - based system for teaching and learning engineering drawing was developed based on a constructivism model. the web - based system is tailored for several topics of engineering drawing such as orthographic projection, sectional view, isometric and oblique drawing at the secondary level. the learning strategy consists of multiple phases beginning with introduction, concept learning, engineering drawing method, application and exercises. during introduction, students will be exposed to an overview of the topic followed by learning of specific concepts. the system provides a learning environment that allows engineering students to view objects from different angles, such as third angle projection and first angle projection as well as views of plans, side and front elevations. after learning about the concepts, students wilt be guided through the various steps in drawing methods for each topic via animations and simulations. learners are able to view any section repeatedly. examples of real application of engineering drawings were also given using graphic, animations and video. to evaluate students understanding, exercises were given at the end of each session
工程制圖一直被認為是一門實踐性學科，其整合了幾何學、建築、力學、電子制圖等，從而將理論與現實圖像聯系起來，工程制圖能為每個不同形狀、尺寸的物體提供精確的、完整的圖像.通常，即使在開放與遠程教育環境中，工程制圖的教學也是通過面對面的教學模式來進行的.由於其特殊性，一些學習者可能難以想象並解釋這些圖像.然而，尖端的技術使得可以通過在線的方式加強工程制圖的學習.研究者基於建構主義模式開發了一個面向工程制圖教學和學習的網路系統.該系統適用於幾種工程制圖，例如展開圖、刻面圖、等角圖和斜角圖.學習過程包括導論、概念學習、工程制圖方法，以及應用與練習等階段.在導論階段，系統為學習者提供了專題簡介，然後是概念學習階段.系統所提供的學習環境允許工程專業的學生從三維透視、一維透視、平面圖、側立面、正立面等不同角度來觀察物體.經過概念學習階段后，系統將引導學生通過動畫和模擬學習每個專題中制圖方法的不同步驟，學習者也能重復觀察任何剖面.另外，還通過圖像、動畫和視頻等方式展示真實的工程制圖應用案例.最後，為了評價學生的理解能力，在每部分內容後面都附有相關的練習The focus is about the char device driver design used in the dvb receiving card and the drive development process in user space ; analyzing the dvb receiving system working principle and process under linux and providing a method to load the linux dvb receive card device drive into the linux kernel ; analyzing and implementing the firmware design of saa7146 chipset working with linux kernel and working characteristic in vrious working mode ; analyzing and implementing the frontend drive programing of the digital tv receive system ; realized the qam demodulation and the mpeg stream filter, so that the output stream can be used to playing on pc better. and this article designs an event management mechanism based on the mhp, which improve the linux dvb software system
重點研究了數字電視接收卡的字元設備驅動問題，闡述了用戶空間開發驅動程序的過程;分析了linux下數字電視接收系統的工作原理和驅動程序開發過程，給出了linuxdvbapi接收卡設備驅動程序加載到linux內核中的方法;研究實現了saa7146晶元配合linux內核共同工作的固件設計和不同工作模式下的工作特性;研究實現了dvb接收系統中前端驅動程序的編寫;設計實現了qam解調和mpeg流解復用，使輸出傳輸流較好地用於pc播放;同時，本文所設計的一種符合mhp規范的中間件事件管理機制，優化了linuxdvb軟體系統。This makes low - voltage / low supply current operation critical ; at the same time, however, accuracy and precision requirements have forced ic manufacturers to meet the challenge of “ doing more with less ” in their amplifier designs
這樣，用低電壓、低電流工作的問題就更加突出，與此同時，精確性和精確度的要求又迫使ic製造者在做放大器設計時，將不得不接受種種取捨的挑戰。Alkaline zinc - manganese battery is widely used all over the world it has good performance of storage ， low cost ， stable discharge and convenience of carrying the sealing of the battery is a crucial factor to the performance of the battery due to the disadvantages of present sealants ， leakage of electrolyte often happens what ’ s more ， the sealing capability affects the performance of the battery the way to raise the sealing capability is to search for a good additive ， which can improve the sealing capability through adding according to chemical principles ， this article picks out ptfe and nylon66 as additive adding ptfe or nylon66 into the pitch can improve the sealing capability of the pitch at the same time ， the temperature ， the time ， the amount of addictive ， the way to drop temperature and the time of churning all should be considered by testing the constitutions ， softening point ， moving degree and length of needle of various pitch samples ， we can compare the properties of different sealants can be studied by using of x - ray, the constitutions of the pitch can be indicated which can help us to explain these changes this article includes ： testing the constitutions ， soften point ， moving viscosity and needle penetration of various pitches ； raising the sealing capability by adding ptfe nylon66 into the pitches ； testing the constitutions ， soften point ， moving viscosity and needle penetration of raised samples ； analyzing and discussing the basic principles of this method it is showed that soften point ， moving viscosity and needle penetration of pitches are increased by adding ptfe nylon66 and the discharge time ， initial voltage ， capacity of battery with pitch raised by nylon66 are good and get to the requirement of gb t7 1 1 2 in a11 the method proposed in this article is available in practical industry use
通過測定改進瀝青的軟化點、運動粘度和針入度等指標參數來比較不同的添加劑及不同的添加條件對瀝青封口性能的影響。本論文的主要研究結果為：系統測試了多種瀝青樣品的組成、軟化點、運動粘度、針入度；對市售瀝青分別添加聚四氟乙烯乳液、有機硅樹脂和尼龍66進行改進，制備了改進產品；對改進瀝青的組成、軟化點、運動粘度、針入度進行了測試和比較；使用改進瀝青組裝成電池並對電池進行恆電流放電測試、短路電流測試和電池漏氣、漏液性能的測試；對瀝青改進的原理進行了分析和討論。實驗結果表明：在瀝青中添加尼龍66和聚四氟乙烯乳液對瀝青的封口性能有明顯的提高；通過對工藝條件的不斷改進，目前的工藝條件已完全可以用於實際生產操作；以添加尼龍66改進的瀝青為封口劑組裝成的電池完全滿足堿錳電池生產的需要，且電池電容量、短路電流等指標均達到gb t7112標準要求；本文提出的改進方案，通過驗證是一種效果好、實用性強的方法。分享友人