Rapid prototyping technology changed the traditional pattern of product design, which could offer product sample for the designer, reduced design cycle and quicken the schedule of new product design, and it gave the decision - makers visual feeling. ; rp technology provided kinds of molds including resin - boncled mold laminate mold, investment mold and lost foam casting mold and so on for sand casting investment casting and cavityless casting, it could also use direct shell production casting to make pattern dies metal dies die - casting dies injection dies directly, and it could even produce casting products in small scales. the applications of fdm technology in plaster precision casting and the rapid casting technology based on sls technology were introduced, the organic combination between rapid prototyping tecnnology and foundry process, which initiated a new period of rapid manufacturing metal parts, by using advanced new technology alternated traditional foundry industry to make it looked brand - new, thus, the competition of foundry industry would be improved ; rapid prototyping technology offered a rapid economical feasible technical method, common processes of using rapid prototyping technology to produce dies were discussed, in the paper it explored that. the problem of combining rapid prototyping technology with electric arc metal - spraying technology to make metal dies and technics in dies manufacturing of combining rapid prototyping technology with precision casting, rapid tooling based on rapid prototyping, integrated advanced new technology and tradition technology of rapid prototyping manufacture, each superiority were exerted, rapid prototyping technology had been an efficiency measure to rapid update products and develop new product, and to middle -
快速成型技術改變了傳統的產品開發模式,可以為設計者提供產品樣件,縮短設計周期,加快新產品的開發進度,為決策者提供直觀性;快速成型技術迅速提供砂型鑄造、熔模鑄造、實型鑄造用的各種模樣,包括樹脂模、層壓模、熔模和消失模等,還可採用直接制殼鑄造法直接製造熔模鑄造用的壓型、金屬型、壓鑄型、注塑模,
甚至直接製造小批量鑄件,
介紹了熔積成型技術在石膏型精密鑄造上的應用和基於選擇性激光燒結技術的快速鑄造技術,快速成型技術與鑄造工藝的有機結合,開創了快速製造金屬零件的新階段,對用高新技術改造傳統的鑄造工業,使其面貌煥然一新,增強鑄造行業的競爭能力;快速成型技術為母模的製造提供了一條快速、經濟、可行的技術途徑,討論了利用快速成型技術製造模具的一般工藝方法,探討了將快速成型技術與金屬電弧噴鍍技術結合起來快速製造金屬模具問題,以及快速成型技術與精密鑄造技術相結合的模具製造工藝,基於快速成型製造的快速模具技術,集成了快速成型製造高新技術和傳統技術,發揮各自優勢,已成為產品快速更新換代和新產品開發及中、小批量生產的有效手段之一。
In lessig ' s view, the internet should serve as a commons, a medium that encourages creativity through the exchange of photographs, music, literature, academic treatises, even entire course curricula
在他看來,網際網路應當是個共同園地,做為一種鼓勵藉由交換來促進創意的媒
介,不管是攝影、音樂、文學作品、學術論文,
甚至是整套課程,都可以透過網路交換。
So he replied to the king, in his most dignified manner, " your worship, one cup of rice is worth the city of benares, including even your own harem, as well as all the suburbs of the city
因此,他煞有
介事地回答道: 「陛下,一杯米價值整個貝拿勒斯城,
甚至王宮后妃,還有城郊,都包括在這杯米的價值內。
What is worse off is that they might somewhat keep annoying most of us whose native language is radically different from english
更糟的是
介系詞很可能多多少少持續地困擾著我們大多數的人,因為我們的母語跟英文相差
甚遠。
Whether it is used stand alone or attached to a monitor, touchscreen or all - in - one unit, the mr1000 provides the functionality needed with an extremely small form factor. easily programmable the mr1000 series msr is easily programmable through the programming utility s intuitive graphical user interface
主要是使用於pos及桌面各種應用方案, mr1000除了可以單一使用外,還可以安裝在監視器或觸摸屏系統上,
甚至安裝電腦面版上,因為一些
介面及縲絲位置,早已在設計上安排好了。
The exhibits depict future space stations and cities, international manned missions to mars and beyond, as well as designs on spacecraft and propulsion systems
這里展示未來太空工廠與城市的模式,又
介紹國際合作發展飛往火星
甚至更遠星球的載人火箭,以及未來太空船計劃與推進系統。
He even ties up with some of the men he has met through his freshman roommate.
剛入學時跟他同住一個寢室的那位
介紹他認識了一批朋友,他跟其中有些人居然也過從
甚密了。
The main purpose of this paper is to investigate the application of the neuron network for the daily exchange rate forecasting. generalized cross validation is introduced to determine the number of nodes of the hidden layer, several well known time series forecasting methods are also compared with the nn method in this paper
討論了人工神經網路在金融匯率預報中的應用。其中
介紹了廣義交互驗證generalized cross validation法如何應用於確定神經網路中隱層的個數,並用實例說明了該方法
甚至對復雜的非線性函數也可以得到很好的逼近。
" he was pointing at me, " dewitt said, adding that sarkozy even grabbed his long - lens camera
德維特說: 「他用手指著我。 」據他
介紹,當時薩科奇
甚至抓住了他的長鏡頭相機。
When you are talking in different language, gesture is an important converse method. but in different countries, the gesture also have different meaning. if you can ' t understand it, you will make a fool of yourself, even you be in trouble. frenchman have many gestures which are very complicated. foreigner can ' t adapt that, so, a website which introduce french gesture to people came out. the website use videos and texts to introduce french gestures, which makes people understand the gestures
在語言不通的情況下,手勢是一種很重要的溝通方式,但是在不同國家手勢表達的含義不一樣,如果不能認清手勢的含義,將會鬧笑話,甚至會惹麻煩,法國是用手勢交流最多的國家,法國人手勢繁雜眾多,讓人感到無法適應,因此,一個專門介紹法國人手勢的網站應運而生,這個網站通過視頻和文字,詳盡的分析了法國人的手勢,使人們理解這些手勢。