freepeople性欧美熟妇, 色戒完整版无删减158分钟hd, 无码精品国产vα在线观看DVD, 丰满少妇伦精品无码专区在线观看,艾栗栗与纹身男宾馆3p50分钟,国产AV片在线观看,黑人与美女高潮,18岁女RAPPERDISSSUBS,国产手机在机看影片

正文內(nèi)容

pcb工程英文確認(rèn)常用詞及常用語句(專業(yè)版)

  

【正文】 We suggest the remain of the vcut line as per old version.(+/).,但我VCUT 刀是30, 45,60度,它們的公差是+/5度,因此我們建議VCUT角度30+/5是允許的。There is white ink on the top pads per original design, We suggest shaving the white ink in case of they contaminate pads. Pls confirm.,恐怕它們會(huì)污染焊盤,建議允許削少許字符,也就是說字符殘缺是允許的。 inch的孔兩面沒有開窗,未避免阻焊污染焊盤,在對(duì)孔雙面加開窗。Some pads are close to the outline .We suggest shaving the pads about avoid to the copper exposure.3. 焊盤延伸出板外,如按原設(shè)計(jì),板邊將會(huì)露銅,建議允許露銅。The plating thickness of Au in edge contact is specified ,it is too tough for us, we suggest following our normal standard ,that is to say instead.。The copper thickness is specified 2OZ .We suggest the finished copper thickness 2OZ. And we will use the base material with copper thickness and plate to 2OZ for our production. ,我們做不到這么厚,建議按IPC二級(jí),即保證可焊性,The solder thickness is required to plated ,We can not reach the requirement .We suggest following IPC class 2 for the solder thickness and we will assure the solderability. 二、公差1. +/,這要求是太緊對(duì)我們生產(chǎn),建議公差放松到+/。The copper pad extend to the board outline, it will lead to copper exposed if we follow Gerber to do,We suggest copper exposed is acceptable. 線很近將會(huì)引起露銅。On the location of J3,some holes of diameter inch amp。Some legends are close to pads .we are afraid they will contaminate the we suggest shaving them a is to say the defective legends is permittable.,因此建議此板沒有字符,如果需要絲印字符,請(qǐng)將字符文件發(fā)給我們。The angle of VCUT is specified 3045 our normal reamer of VCUT is only 30, 45,60 tolerance is +/5 degree .So we have to suggest the angle of VCUT 30+/5 degree is permitted.。The actual gerber dimension is different from the description in drill suggest per actual gerber.+/。Most of silkscreen is on the pads, we suggest no silkscreen, if we need to do silkscreen we suggest removal of those which are on pads.,為了避免油墨污染焊盤,我們建議削去上焊盤的白油,請(qǐng)確認(rèn)。As no located holes for our routing,we suggest four additional holes with in waste tab.五、阻焊層1.在字符J3處, inch amp。Two holes are near the outline,it will cause copper exposed and hole broken,we suggest copper exposed and hole broken is permitable.,避免露銅。s .,我們加工太困難。The tolerance of dimension is specified XXX.+/ .It is tight for our production .We suggest +/ instead。The three pads are so close to the vcut that they will cause copper exposure. We suggest shaving the pads avoid to the copper exposure.,這種網(wǎng)格間距我們生產(chǎn)無法做到,.The copper grids on bottom side is only in some places,we can not do it per this gap,so we suggest decreasing the trace width to make copper grids to .6. 既然沒有功能上的影響,我們建議所有層附邊均加些銅皮以提高電鍍質(zhì)量。 inch have not mask opening on both sides, we would like to add mask opening for these holes to avoid solder resist encroach the solder pad on both sides.,為了避免油墨滲上焊盤,我們建議在BOTTOM面也加上與TOP面等大的阻焊開窗These pads have single side mask opening on the top side , we suggest extra mask opening on the bottom side with same size as pads to avoid mask onto pad.,我們認(rèn)為它們應(yīng)為元件孔。We didn39。We suggest waste tabs connected around the panel to have it stronger.7. 在gerber 文件中我們沒有發(fā)現(xiàn)有外形層,請(qǐng)發(fā)外形文件給我們,否則我們無法制作。The unit outline cann’t match the panel suggest following the unit outline to mod
點(diǎn)擊復(fù)制文檔內(nèi)容
數(shù)學(xué)相關(guān)推薦
文庫(kù)吧 www.dybbs8.com
備案圖鄂ICP備17016276號(hào)-1