零級能階 的英文怎麼說
中文拼音 [língjínéngjiē]
零級能階
英文
zeroth level-
Then implemented function unit of bom backward query and bom query and creating tree. chapter 5, on the device of hierarchy controlling, production process is managed by two accounts. and designed parts - account and working procedure account in detail
第五章以分層遞階控制策略，採用兩級臺帳管理生產過程，詳細設計了零件臺帳和工序臺帳的數據庫，給出了缺件清單生成和零件狀態查詢等功能單元的實現。Become a kind of new electronics circuit - current - mode circuit. it is replacing the traditional design method of the voltage - mode in the high frequency high - speed signal processing realm 。 this thesis mainly discussed the modified second - generation current conveyors based on the current - mode kinds of new cuicuit components, they are stronger modified standard current - mode parts in fuctions on this foundation. mainly including the modified differential difference current conveyor ( mddccii ) 、 the fully balanced second generation current conveyor ( fbccii ) 、 ( full balances ) four - terminal floating nullor ( fbftfn ) and the current differencing buffered amplifier ( cdba ), they are all function very strong standard current - mode parts, they all can provide some circuit functions of better than general operation amplifier, because they have the voltage importation and the current importation, therefore use it since can carry out the voltage - mode signal processing circuit expediently, can also carry out the current - mode signal processing circuit expediently, and have to increase the benefit bandwidth to accumulate more widely than the voltage - mode, but have their advantages more according to the current - mode filter of the modified current conveyor, because it constitutes in brief, the filter wave function is stronger and they are better than in general use operation amplifier of many advantages, be easy to composing for example 、 high speed 、 frequency bandwidth 、 the power supply voltage requests low 、 consume small, the impedance is different from etc. advantages, otherwise they have biggish dynamic range, and flexible circuit synthesize, so they are the best active parts
從第二代電流傳輸器ccii入手，重點研究了以下幾種改進型的第二代電流傳輸器:改進的差動差分電流傳輸器mddccii 、全平衡第二代電流傳輸器fbccii 、多輸出四端浮地零器ftfn 、全平衡四端浮地零器fbftfn 、電流差分緩沖放大器cdba的電路結構及其模型。然後在此基礎上系統地研究了基於這幾種改進型的第二代電流傳輸器的濾波器的設計方法，主要方法和結果如下:利用mddccii設計了差分式連續時間電流模式低通、帶通濾波器;電流模式跳耦結構考爾低通濾波器;利用fbccii設計了帶通二階節濾波器及電流模式雙二階通用濾波器;設計了基於多輸出端ftfn的電流模式二階通用濾波器電路;通過數字化開關選擇的基於fbftfn的電流模式通用濾波器;設計了基於最少個數電流緩沖放大器（兩個cdba ）的多功能通用電流模式濾波器及其在非理想因素情況下分析。設計濾波器的主要方法是採用級聯設計、運算模擬（信號流圖法）和反饋設計（跳耦法） 。Computer aided design ( cad ), is a kind of modern design technology that helps designers to finish production design assignment speediness, high speed, high quality, low cost. the application of cad of our country is at primary prevalence stage, and at the same time faces to the challenge of global networking and informationing. the developing requirement of users puts forword new requests of the cad production, software enterprise and application level. users not only require integration cad / cae / cam / capp / pdm and so on, but also puts forword the request on the aspect of deleveloping software, that is the same essentiality of convenience of users and intelligentize, functionality, leveling. on this developing tendency, put forword " the research and development of the object - oriented intelligentize cad system ", by conceiving a opening, applied, object - oriented cad system, realize the intelligentizing of designing parts, to provide effective measure of integration of information. and aims to push the application of cad technology at home and the application of advanced design technology in modern manufacturing
我國cad應用基本還在「甩圖板」階段，即初級普及cad階段，同時又面臨著全球網路化、信息化新的挑戰，用戶未來的發展需求對我們現在cad產品、軟體企業和應用水平都提出了新的要求，用戶不但要求集成cad cae cam capp pdm等一系列配套軟體產品，在軟體的開發方面提出了用戶方便性和軟體智能化與功能性並重的要求。在這種發展趨勢之下，我們提出了「面向對象的智能化cad系統的研究與開發」 ，通過構建一個開放的、實用的、面向對象的智能cad框架，實現企業零件設計的智能化，並為企業提供了信息集成的有效手段，以推進cad技術在國內的進一步應用和先進設計技術在現代製造業中的應用。
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