hydrofluoric acid - hf 中文意思是什麼

hydrofluoric acid - hf 解釋
氫氟酸
  • hydrofluoric : adj. 【化學】氟化氫的。
  • acid : adj. 1. 酸味的。2. 【化學】酸的,酸性的。3. 〈比喻〉尖酸刻薄的,易怒的。n. 1. 酸味物。2. 【化學】酸。adv. -ly ,-ness n.
  • hf : Hf = 【化學】 hafnium.
  1. In order to elaborate the app licability of osl to loess, especially single aliquot regenerative protocol ( sar ), involving stimulation of the same disc with an infra - red laser diode followed by blue leds to polymineralic fine - grains of loess, such explanations as light bleaching, preheat, anomalous fading, prior - ir exposure were investigated in this paper. for drawing adequate coarse grains from loess, quartz and feldspars, as well as loess, were etched by hydrofluoric acid and fluorosilicic acid. the sequence of ages of holocene loess in weihe rivier basin has been established by single - aliquot ( sar ) and multiple - aliquot using fine - grains and sar using coarse - grains

    本文通過渭河流域全新世黃土的光曬退實驗,地表黃土樣品的d _ e值測定,細顆粒單片的預熱、反常衰退、紅外暴露實驗,說明釋光測年在全新世黃土中應用的可行性及單片再生劑量法( sar )在黃土細顆粒中的適用性;為了從黃土中分離出足夠的粗顆粒,進行了純石英和長石的氫氟酸( hf )和氟硅酸( h _ 2sif _ 6 )溶蝕實驗,黃土粗顆粒石英溶蝕分離實驗;通過細顆粒單片、多片的blsl 、 irsl和post - irosl ,熱釋光,及粗顆粒石英的blsl的年代測定,選擇適于全新世黃土的釋光測年方法,並建立了渭河流域全新世黃土的年代序列。
  2. Subject to mild attack by aqua and or hydrofluoric acid

    在王水和氫氟酸中稍有腐蝕
  3. A case of hydrofluoric acid poisoning treated by venous injecting of calcium gluconate

    靜脈補鈣搶救氫氟酸中毒1例報告
  4. Material illustrating detailed structure of graptolites has been etched from limestone by means of hydrofluoric acid.

    表明筆石詳細構造的物質是利用氫氟酸從石灰巖中侵蝕出來。
  5. Chemical reagents. hydrofluoric acid

    化學試劑氫氟酸
  6. Aqueous hydrofluoric acid for industrial use. sampling and methods of test

    工業用含水氫氟酸.取樣和試驗方法
  7. Silica refractories - determination of silicon dioxide content - hydrofluoric acid gravimetric method

    氫氟酸重量法測定二氧化硅量
  8. Chemical analysis of silica refractories - part 3 : determination of silicon dioxide - hydrofluoric acid gravimetric method

    硅質耐火材料化學分析方法第3部分:氫氟酸重量法測定二氧化硅量
  9. It is insoluble in water and acid, but dissolves in caustic soda and hydrofluoric acid without separation under high temperature

    不溶於水及酸,深於苛性鈉、氫氟酸,受高溫不分解。
  10. Before any monel part is assembled into a hydrofluoric acid valve it is acid tested to assure that it is monel

    在將任何蒙乃爾部件組裝進氫氟酸閥門之前,都經過酸性檢測,以確保確實是蒙乃爾材料。
  11. We test our hydrofluoric acid valves at extended time periods that further assure the quality of the valve performance

    我們加長了檢測我們的氫氟酸閥門的時間段,這樣就進一步保證了閥門性能的質量。
  12. Because it well reserves the chemical stability of inorganic glass, it has the following features : low density, low thermal conductivity, vapor impermeability, no water absorption, incombustibility, protection from mould and rat eating, high mechanical strength but easy to cut and able to bear all kinds of chemical erosions except the hydrofluoric acid

    由於它完全保留了無機玻璃的化學穩定性,具有容重低導熱系數小不透濕不吸水不燃燒不霉變不受鼠嚙機械強度高卻又易加工,能耐除氟化氫以外所有的化學侵蝕。
  13. Hydrofluoric acid will react with carbon steel and monel producing a fluoride buildup on the metal surfaces which can render the valve inoperable

    氫氟酸會與碳鋼和蒙乃爾發生化學反應,產生氟化物,聚積在金屬表面,從而致使閥門無法正常工作。
  14. The save energy mould pump of the corrosiveness of the ministry of industry such as chemical industry and chlorine alkali, chemical fertilizer, dyestuff, reagent, pesticide, pharmacy, electroplating and environmental protection etc door transport that pf ( fs ) mould chemical industry pump can satisfy to carry many kinds of consistency sulphuric acid, hydrochloric acid, nitric acid, acetic acid, phosphoric acid, chromium acid, oxalic acid, hydrofluoric acid and the lye, organic solvent and oxidizer geometric ratio medium under - 50 s - 80 s temperature conditions and is not han s anything small and roundish medium

    型化工泵能滿足輸送- 50 80溫度條件下的多種濃度硫酸、鹽酸、硝酸、醋酸、磷酸、鉻酸、草酸、氫氟酸和堿液、有機溶劑、氧化劑等化學介質、是化工、氯堿、化肥、染料、試劑、農藥、制藥、電鍍、環保等工業部門輸送不含顆粒的腐蝕性介質的節能型泵。
  15. This paper mainly aims at the strategic demands for large - aperture lightweight mirror proposed by high - tech development. its main research contents are : select material blank for lightweight mirror according to physical and chemical properties of optical glass ; analyze and calculate the deformation quantity of the mirror with finite element method ; design and optimize mirror body structure of 400 lightweight plane mirror and 450 lightweight spherical mirror, analyze glass cutting principle, design specisl - use grinding wheel structure, select reasonable technological parameters to implement the processing of weight reduction holes on 400 plane mirror ; analyze etching mechanism of hydrofluoric acid, look for the technological parameters such as the optimal acid concentration and etching time etc. ; eliminate the stress of weight reduction holes and micro - cracks on 400 lightweight plane mirror ; discuss the processing principle and

    本論文的研究主要是瞄準國家高技術對大口徑輕型鏡的戰略需求而開展的。主要研究內容是:根據光學玻璃的物理與化學性能,選擇輕型鏡坯材料;用有限元法對鏡子的變形進行分析、計算,找出變形規律,優化設計400mm輕型平面鏡、 450mm輕型球面鏡鏡體結構;分析玻璃切削原理,設計專用磨輪結構,選擇合理工藝技術參數,完成400mm平面鏡輕量化減重孔的加工;分析氫氟酸腐蝕光學玻璃機理,尋找最佳酸濃度、腐蝕作用時間等工藝參數,實現400mm平面鏡減重孔應力與微裂紋的消除;討論分離器加工原理和工藝技術特點,完成400mm平面輕型鏡面形加工。
  16. A new type filler, ptfe ladder rasching ring is designed and used in the washing tower of anhydrous hydrofluoric acid equipment, properties of this filler is also analyzed

    摘要設計了1種新型填料ptfe階梯拉西環並應用在無水氫氟酸裝置的洗滌塔中,分析了該填料的特性。
  17. Although samples were in a hot reflux for a long time at 85 in the experiment, and 5 ? molecular sieve of the adsorbed sample was acidized by hydrofluoric acid, the analytical method was tested to have little influence on carbon isotopic composition of the saturated hydrocarbons before and after complexation

    盡管實驗過程中樣品經過85長時間加熱迴流及吸附樣品的5 ?分子篩用氫氟酸酸化處理,但實驗結果經儀器檢測,證明該方法對正構烷烴碳同位素值影響因素不大。
  18. It introduces the property of by - product fluorgypsum from hydrofluoric acid, reviewes the application of fluorgypsum at home, and predicts the developing trend and direction of comprehensive utilization fluorgypsum

    摘要對氫氟酸生產中的副產品氟石膏的性質進行了介紹,綜述了氟石膏目前在我國的應用現狀,並展現了氟石膏變廢為寶,資源綜合利用的前景。
  19. The paper expounded theory, characteristics, using range and auxiliary reagent of hydrochloric acid, hydrofluoric acid, citric acid, edta and made simple introduction to their craft and use instances, when cleaning the boiler can take reference

    摘要對鹽酸、氫氟酸、檸檬酸、乙二胺四乙酸四種鍋爐常用化學清洗劑的清洗原理、特點、使用范圍,以及配套助劑進行詳細的闡述,並對四種清洗劑的清洗工藝及應用實例進行了簡單介紹,可在鍋爐清洗時進行參考。
  20. Analysis of water used in boiler and cooling system - determination of total silicon - photometric method by conversion with hydrofluoric acid for low silicon

    鍋爐用水和冷卻水分析方法全硅的測定低含量硅氫氟酸轉化法
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