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

注塑模具畢業(yè)設(shè)計外文翻譯-免費閱讀

2025-07-23 04:07 上一頁面

下一頁面
  

【正文】 什么是奮斗?奮斗就是每天很難,可一年一年卻越來越容易。能干的人,不在情緒上計較,只在做事上認真;無能的人!不在做事上認真,只在情緒上計較。鎂合金壓鑄模具目前雖然剛起步,但發(fā)展前景好,有代表性。 (2)精密沖壓模具 多工位級進模和精沖模代表了沖壓模具的發(fā)展方向,精度要求壽命要求極高,主要為電子工業(yè)、汽車、儀器儀表、電機電器等配套。因此,一些重要的模具標(biāo)準件也必須重點發(fā)展,而且其發(fā)展速度應(yīng)快于模具的發(fā)展速度,這樣才能不斷提高我國模具標(biāo)準化水平,從而提高模具質(zhì)量,縮短模具生產(chǎn)周期,降低成本。 (9)模具及模具標(biāo)準件、重要輔件的標(biāo)準化技術(shù)。 (3)模具生產(chǎn)企業(yè)的信息化管理技術(shù)。 目前,我國經(jīng)濟仍處于高速發(fā)展階段,國際上經(jīng)濟全球化發(fā)展趨勢日趨明顯,這為我國模具工業(yè)高速發(fā)展提供了良好的條件和機遇。雖然國內(nèi)許多企業(yè)已引進許多國外先進設(shè)備,但總體的裝備水平比國外許多企業(yè)低很多。 (4)開發(fā)能力較差,經(jīng)濟效益欠佳 我國模具企業(yè)技術(shù)人員比例低,水平較低,且不重視產(chǎn)品開發(fā),在市場中經(jīng)常處于被動地位。 雖然我國模具總量目前已達到相當(dāng)規(guī)模,模具水平也有很大提高,但設(shè)計制造水平總體上落后于德、美、日、法、意等工業(yè)發(fā)達國家許多。近年,不僅國有模具企業(yè)有了很大發(fā)展,三資企業(yè)、鄉(xiāng)鎮(zhèn)(個體)模具企業(yè)的發(fā)展也相當(dāng)迅速。 Specialized mold factory quantity and its productivity increase。s later periods, the Chinese mold industry only then drives into the development speedway. Recent years, not only the stateowned mold enterprise had the very big development, the three investments enterprise, the villages and towns (individual) the mold enterprise39。s modern management technology □Mold profession in 十15 period needs to solve the key essential technology should be the mold information, the digitized technology and precise, ultra fine, high speed, the highly effective manufacture technology aspect breakthrough Along with the national economy total quantity and the industry product technology unceasing development, all the various trades and occupations to the mold demand quantity more and more big, the specification more and more is also high.Although mold type many, but its development should be with emphasis both can meet the massive needs, and has the paratively hightech content, specially at present domestic still could not be selfsufficient, needs the massive imports the mold and can represent the development direction largescale, precise, is plex, the long life mold. The mold standard letter type, the quantity, the level, the production a and so on have the significant influence to the entire mold profession development. Therefore, some important mold standard letters also must the prioritize, moreover its development speed should quickly to the mold development speed, like this be able unceasingly to raise our country mold standardization level, thus improves the mold quality, reduces the mold production cycle, reduces the cost. Because our country mold product holds the bigger price superiority in the international market, therefore regarding the exportation prospect good mold product also should take key develops. According to the above required quantity big, the technical content is high, represents the development direction, the export prospect good principle choice prioritize product, moreover chooses the product to have at present to have the certain technology base, belongs has the condition, has the product which the possibility develops .According to 十15 the mold profession development plan, 十15 the period mold product development mainly has following several kind of the automobile cover mold (1)Ramming mold to occupy The mold total quantity dish with emphasis above 40%. Automobile cover mold mainly for automobile necessary, also includes for the agriculture with the vehicle, the project machinery and the farm machinery necessary cover mold, it has the very big representation in the ramming mold, the mold mostly is large and middle scale, structure plex, the specification is high. For the passenger vehicle necessary cover mold, the request is in particular higher, may represent the ramming mold the level. This kind of mold our country had the certain technology base, already for middlegrade passenger vehicle necessary, but the level is not high, the ability is insufficient, at present satisfying rate only has one about the half. Center the upscale passenger vehicle cover mold main dependence import, has bee the bottleneck which the automobile develops, enormous influence vehicle type development .(2)The precise ramming mold Multi locations level was entering the mold and fine represents the ramming mold development direction, the precision request life request has been extremely high, mainly for the electronics industry, the automobile, the instrument measuring appliance, the electrical machinery electric appliance and so on formed a plete set. These two kind of molds, domestic had the suitable foundation, and has introduced the overseas technology and the equipment, the individual enterprise produces the product has achieved the world level, but the majority of enterprises still had a bigger disparity, the supply total quantity insufficient, the import were very many (3) The largescale precise plastic mold Plastic mold accounts for the mold total quantity 10%, moreover this proportion also is rising. In the plastic mold necessary largescale casts the mold for the automobile and the e
點擊復(fù)制文檔內(nèi)容
試題試卷相關(guān)推薦
文庫吧 www.dybbs8.com
備案圖鄂ICP備17016276號-1