電路孔 的英文怎麼說
中文拼音 [diànlùkǒng]
電路孔
英文
circuit hole-
Incondition of surface anti - corrision and insulation coat of metal and tiny hole of steel where resistance and crack is very small, when supplying a high voltage, gas crack will be punctured and electric spark discharging will occur, now send a pulse signal to the alarming circuit the alarmer can send out sound and light to alarm. we can do leak hunting on the coating according to this principle
金屬表面絕緣防腐層過薄、漏鐵及漏電微孔處的電阻值和氣隙密度都很小，當有高壓經過時就形成氣隙擊穿而產生火花放電，給報警電路產生一個脈沖信號，報警器發出聲光報警，根據這一原理達到防腐層檢漏目的。Direct connect vias conduct so much heat away from the pin and into the plane that high temperature or long soldering time may be required to complete the joint - thermal damage could occur to both the board and the component from soldering or desoldering
在焊接時，直接連接的過孔會通過引腳把大量的熱傳導至內電層，因此完成焊接就需要很高的溫度或者延長焊接時間，這就會導致在焊接或拆焊時發生電路板或元件的損壞。In the process of manufacturing printed circuit board ( pcb ), every board has to be drilled based holes firstly. so the precision of based holes greatly influence the quality of pcb
在印刷電路板生產中，定位孔的精度對pcb加工質量有很大影響，傳統的加工方法是靠人眼直接瞄準，影響定位精度和生產速度。Then we introduce the character of the atmosphere channel, which we emphasized on the atmosphere scatter, absorption and scintillation ' s effect on the laser beam. in chapter, we explain why we used cassegrain telescope to collect the optical signal at first, then the lightsource, detector, front amplifier used in optical communication has been compared to that of fiber communication, the noise including shot noise, thermal noise and background light noise has been explained here for analysis the snr and ber in the next section
在第三章介紹無線光接入系統的光收發單元，採用多孔徑卡塞格倫式的收發天線對消除減小大氣湍流影響有較大作用，針對大氣通道的特點無線光系統收發單元在光源、光探測器、前置放大電路上存在許多有別于光纖通信的技術，同時還闡述了光接收機包括背景噪聲的噪聲機制和接收靈敏度、誤碼率等指標，最後給出了一個整個傳送鏈路的功率預算。Porous silicon ( ps ) is a new type silicon - based material developed in recent years, which has different properties compared with the crystalline materials. porous silicon can luminescence efficiently across the whole range from the near infrared, through the visible region, to the near uv region. this characteristic makes it possible to fabricate light - emitting devices and solve the key problem of the optoelectronic integrated circuit ( qeic ), opening up the bright future for the vlic
多孔硅（ ps ）是近年來發展起來的一種新型硅基材料，具有與單晶硅材料大不相同的特性，例如，多孔硅可在近紅外和可見，甚至近紫外區輻射強烈的熒光，使得它可用來製造發光器件，並可望在解決光電子集成電子學的關鍵問題，為製造帶有光源的大規模集成電路等方面開辟新的途徑。Remember the following words and expressions : e. g. multimeter ； circuit ， current ； voltage ； resistance ； digital multimeter ； analogue multimeter ； analogue multimeter scales ； zero adjustment control ； zero adjustment control for resistance ranges ； measurement ranges switch ； transistor test socket ； meter probe ； positive terminal ； negative terminal ； anode ； cathode ； red lead ； black lead ； power supply ； connect in parallel ； connect in series
記住萬用表、電路、電流、電壓、電阻、數字萬用表、模擬萬用表、表頭、機械零位調整器、歐姆零位調整器、量程選擇開關、晶體管插孔、表棒、正接線端、負接線端、陽極、陰極、紅導線、黑導線、電源、並聯、串聯等常用英文單詞，並逐步掌握。Capability detail specification : single and double sided printed boards with plated - through holes ; german version en 123200 - 800 : 1992
性能詳細規范.帶電鍍通孔的單面和雙面印製電路板Harmonized system of quality assessment for electronic components : sectional specification : single and double sided printed boards with plated through holes
電子元器件質量評定統一體系.分規范:具有鍍通孔的單面和雙面印製電路板Rd auto pinning machine is used to make reference positioning pin prior to drill the laminated plates of etched circuit card on drill machine for etched circuit card manufacture premium products
Rd全自動釘銷機用於印刷電路疊層板在印製電路板數控鉆床鉆孔前鉆作基準定位銷釘，從面保證印刷電路板數控鉆床能加工出高品質的產品。Sectional specification for capability approval of manufacture of double - sided rigid printed wiring boards of assessed quality with plated through holes
級質量評定的帶穿透鍍膜孔的雙面硬性印刷電路板製造商性能鑒定用分規范Centalic technology development ltd. was established in 1980 and provided pcb hole - drilling services since then. as a hong kong manufacturer, centalic began to produce bare - board testers in 1985. further than that, in 1987, contact probes were made for the bare - board testers and also for export purpose
先得利科技發展有限公司成立於年初期主要經營印刷電路板鉆孔服務于年增設裸板測試機項目自年起為配合測試機及拓展海外市場的需要新研發了測試針項目This paper also introduced an object - oriented knowledge management system. using the eakrl, capp system described in this paper implemented computer aided pca process planning, which includes the selection of the assembly method, the generation of process route, the automatically query of parameters of smt and tht operations
運用面向對象的工藝知識的處理方法，本文中的電子裝配capp系統實現了印製電路板組裝工藝決策系統，包括安裝方法的自動選擇、工藝路線的生成以及表面貼裝、通孔插裝工序工藝參數的自動選擇。Printed board assemblies - sectional specification - requirements for through - hole mount soldered assemblies
印製電路板組件.分規范.通孔安裝焊接組件要求A type of two layers pbg structure band stop filter with holes in the substrate is introduced in this paper, it detaches the substrate and microwave circuit, which solves the problem of placing microstrip line and helps to manufacture and amend, both the simulation result with hfss and measurement results are given out to identify its possibility
摘要本文介紹了一種雙層結構的基於襯底打孔的pbg結構帶阻濾波器，採用了周期結構與微帶電路分離的設計，解決了傳統的打孔結構的導帶加工問題，並且有利於電路的加工和修改。Even though hms can be prepared much more easily than mcm - 41 and has certain advantages such as thicker framework walls, superior thermals stability, and a smaller crystalline size. hms have more recently been shown to possess wormhole - like or sponge - like framework structure rather than the long - range hexagonal framework structures characteristics of electrostatically assembled mcm - 41. the wormhole channel motif is a potentially important structure feature for favorable catalytic reactivity, in part, because channel branching within the framework can facilitate access to reactive sites on the framework walls. furthermore the wormhole channel motif suggest that they could serves as ideal hosts for rational nanomanufacturing
1995年， tanev和pinnavaia報道，用中性模板劑合成了一類新的六方介孔固體（ hms ） ，它具有不同於用靜電路徑合成的mcm - 41介孔固體的物理和化學性能，如制備工藝簡單、孔壁厚、熱穩定性好和晶粒尺寸小等。 hms還具有蜂巢或海綿狀結構特徵，而不象mcm - 41那樣是長程有序的六方結構。這種蜂巢或海綿狀結構特徵除有利於催化反應，反應物易於接近孔壁上的反應位外。All parts of the apparatus were welded in each transparent plastics box, and these boxes can be expediently inserted or pulled out of the scaleboard ; on the scaleboard, the nine eyelets combined with the " 田 " are connected, they can be used as a node when we do experiments
元器件焊裝在透明塑料盒內，盒與底板可以方便地插拔連接；底板上以「田」字組成的九個小孔內部相互連通，實驗時可以成為電路中的一個結點。Coplanar waveguides ( cpw ' s ) offer several advantages over conventional microstrips, these include the simplification of the circuit fabrication process, ease of parallel and series insertion of both active and passive components ( without the need for via holes ), and high circuit density. therefore cpw ' s are widely used in microwave and millimeter - wave integrated circuits, optical and high temperature superconductor microwave devices
與常規的微帶傳輸線相比，共面波導具有容易製作，容易實現無源、有源器件在微波電路中的串聯和並聯（不需要在基片上穿孔） ，容易提高電路密度等優點，因此共面波導被廣泛應用於微波、毫米波、光學和高溫超導等集成電路中。Aperture compensator circuit
孔徑失真補償電路Providing pcb hole - drilling services development bare board tester
主要經營刷電路板鉆孔服務The year production of our company attains 7, 500, 000 meters, the specification ranges 15 yard to 380 yard, and with smooth surface, precision bore, low extension, and suitable for silk - screen, and mainly used in the fields of silk fibre, ceramic printing, circuit board printing, design board printing, advertising board, color paper, filter, suitcase industry, environment protection, etc
本公司年產絲網達到750萬米，產品規格15目- 380目，本產品：網面平整、目孔精確、伸長率低，絲印性能好，主要適用於絲綢花纖、陶瓷印花、印製電路板、印花製版、標牌、花紙、過濾、箱包、環保等行業。分享友人