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常見(jiàn)顯示儀表零點(diǎn)檢查和調整方法
儀表零點(diǎn)的檢查和調整是儀表工必須掌握的技能。本文介紹壓力變送器、差壓變送器、熱電偶顯示儀表和熱電阻顯示儀表零點(diǎn)檢查和調整方法,對儀表工提高技術(shù)水平大有幫助。 當操作工對儀表的指示值有懷疑時(shí),就需要對儀表進(jìn)行檢查,*常用的方法就是先檢查儀表的零點(diǎn)是否正確。
發(fā)布時(shí)間:2020-04-17 點(diǎn)擊次數:369次
計量基礎知識
1、計量的特點(diǎn)?
發(fā)布時(shí)間:2020-04-17 點(diǎn)擊次數:529次
再次單雙號限行,霧霾的罪魁禍首真的是汽車(chē)尾氣?
關(guān)于霧霾行程的主要原因有很多,也很復雜。有人說(shuō)是機動(dòng)車(chē)尾氣排放,也有說(shuō)因為冬季供暖燃煤質(zhì)量太差,還有說(shuō)地形不利于空氣流動(dòng),空氣中的污染物不能及時(shí)排開(kāi)等等原因,具體大家可以問(wèn)度娘。既然說(shuō)限行,那么汽車(chē)尾氣對霧霾的影響到底有多大?
發(fā)布時(shí)間:2020-04-17 點(diǎn)擊次數:250次
發(fā)布時(shí)間:2020-04-17 點(diǎn)擊次數:257次
環(huán)保部印發(fā)《國內生態(tài)保護“十三五”規劃綱要》
[導讀] 建立“天地一體化”的生態(tài)監測體系。加強衛星和無(wú)人機航空遙感技術(shù)應用,提高生態(tài)遙感監測能力。建立生物多樣性地面觀(guān)測體系,到2020年新建、改建或擴建50個(gè)陸地生物多樣性綜合觀(guān)測站,建成800個(gè)以上生物多樣性觀(guān)測樣區。建設一批相對固定的生態(tài)保護紅線(xiàn)監控點(diǎn)。優(yōu)先在長(cháng)江經(jīng)濟帶、京津冀地區建立觀(guān)測站和觀(guān)測樣區。
發(fā)布時(shí)間:2020-04-17 點(diǎn)擊次數:262次
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