石油酯 的英文怎麼說
中文拼音 [dànyóuzhǐ]
石油酯
英文
petroleum ester-
Chemical manufacturer and distributor located in california, specialized in supplying fluorine - containing chemicals, as well as agrochemical and pharmaceutical intermediates and active ingredients
- iso9001質量認證，提供石油添加劑氟化物潤滑油聚氨酯四大系列六十多種產品，包括公司介紹產品介紹供求信息等According to the polarity, the residue was isolated with petroleum ether, chloroform, ethyl acetate, and n - buoh, respectively. the n - buoh fraction, confirmed as neuroactive component, was subjected to sephadex lh - 20 column chromatography to provide an extract fraction, as a buff powder, which could induce neurite outgrowth in rat pheochromocytoma pc12 cells in a dose - dependent manner up to 50 mg / l
將菟絲子乾粉用75乙醇浸泡后，減壓蒸干后得到褐色漿狀物，經石油醚、氯仿、乙酸乙酯、正丁醇萃取，經柱層析后，再用葡聚糖凝膠對有效成份進一步純化，獲得了菟絲子中能誘導pc12細胞分化的活性組分。We got 4 parts from the extraction of astragalus variabilis bunge through systemic research ways of phytochemistry, which respectively are the part of petroleum ether, the part of petroleum ether, the part of etoa and the part of n - buoh the part of n - buoh are isolated by the successively methods of silica - gel column chromatography, tlc and sublimation
摘要採用植物化學成分系統研究的方法，從變異黃芪醇提總浸膏中分段萃取得到石油醚提取部分、氯仿提取部分、乙酸乙酯提取部分和正丁醇提取部分。Results of experiments on antibacterial and antifungal activities showed that extracts of alcohol and acetic ester had remarkable bacteriostasis effects against 6 bacteria ; aqueous extract was more effective against fungi, and slight against bacteria ; petroleum ether extract had no effect against bacteria and fungi ; butylalcohol extract had different effects against bacteria, but had no effects against fungi
抑制活性試驗結果顯示：乙醇提取物和乙酸乙酯萃取物對供試的6種細菌有較強的抑制作用；水相對供試的5種真菌有較強的抑制作用，而且對細菌有較小抑制作用；石油醚相對真菌和細菌幾乎無抑制作用；正丁醇萃取物對細菌有不同程度的抑制作用，而對真菌無抑制作用。In order to study the influence factors of aoa of rose flowers, the effects of drying and extraction methods on the aoa of rose flowers were investigated. the results indicated that drying after high - temperature short - time pretreatment was rather effective to maintain their aoa ; the aoa of water extracts was stronger when the temperature was raised from 25 to 100 ; by using orthogonal test, the optimum extraction conditions of rose flowers were : solvent - 75 % ethanol ; ratio of material and solven - 1 : 10 ; extraction times - three times with 24 h at one time, at the room temperature. the extracts obtained by 75 % ethanol were fractionatedly extracted with petroleum, diethyl ether, ethyl acetate and n - butanol in turn, and the various fractions " aoa were analyzed
為了探討玫瑰花抗氧化活性的影響因子，比較了不同乾燥方法、提取方法對其抗氧化活性的影響，發現：經短時高溫處理后再進行乾燥有利於較好地保持玫瑰花的抗氧化活性；以水作溶劑提取時， 25 100范圍內水提液的抗氧化活性隨著溫度的升高而增強；通過正交實驗篩選得到常溫下玫瑰花抗氧化活性物質的最佳提取方法為： 75乙醇為溶劑，液料比1 ： 10 ，提取3次，每次24h ； 75乙醇提取物依次用石油醚、乙醚、乙酸乙酯、正丁醇等有機溶劑進行兩相分部萃取，發現玫瑰花的抗氧化活性物質主要存在於乙酸乙酯部，說明玫瑰花抗氧化活性主要成分可能是單寧類、黃酮苷類和原花色素類化合物； 4We have a long history for more than 46 years of specializing in different types of slings, mainly products including polyester webbing sling, polyester round sling, polyester cargo lashing, super sing, flat sling, flat webbing sling, flat web sling, polester web sling, tree strap, webbing strap, doublebraid, recovery strap, recovery tow strap, lashing systems, polyester sling, polyester belt sling, hollow braid, synthetic webbing, endless sling, nylon sling, synthetic web sling, synthetic sling, webbing sling, round sling, cargo lashing, ratchet tie down, ratchet lashing, ratchet strap, ratchet tie down strap, nylon webbing, nylon strap, tubular round ropes, braided rope, diamond braid rope, starter rope, safety net, safety belt, cargo net, safety rope, climbing rope, rope ladder, building net, nylon net, polyester webbing sling, polyester round sling, tie down, cargo restraint, webbing strap, duplex eye - eye webbing sling, eye - eye webbing sling endless webbing sling, widely and heavy duty webbing sling, multi - sling, ratchet lashing, tow strap, web belt sling, flat webbing sling, nylon rope ladder, industrial safety nets, nylon cargo net, dock net, synthetic webbing sling, lifting clamp, braided rope, 3 strand rope, 12 strand rope, 8 strand rope, cargo net, shipmast net, tube net, solid braided rope, braided rope net, sports net, pe net, safety net, scaffold net, synthetic slings, wide lift sling, round webbing sling, flat webbing sling with eyes, flat webbing endless sling, wire rope sling, multi - set sling, pipe lifting sling, pipeline sling, lowering belt, heavy duty anti cutting sleeves, fiberglass rope, fiberglass wick, braided fiberglass rope, fiberglass rope lamp, fiberglass oil lamp wick, fiberglass strap, solid braided fiberglass rope - round, fiberglass tapes, ceramic fiber rope, fiberglass braided rope, pipe handling sling, lowering in belts, stone handling sling, car tractor package strap, car drawn hoisting belt, special purpose sling, flat belt sling, flat lifting sling, heavy duty webbing lifting sling, pipe lifting belt, pipe handling sling, synthetic fiber round sling, glass pack sling, synthetic lifting sling, flat pack sling, twin path round sling, synthetic fiber sling, nylon webbing strap, pipe sling, bandsling, pipe sling with reinforced eyes, lifting sling with reinforced eyes, pipeline pipe industrial farm lifting sling, endless sling, eye eye sling, oil field sling, truck strap, winch strap, cargo tie down, track ratchet strap, tow strap winch flat rope tow line, heavy duty webbing towing lifting sling, cargo sling, pp cargo sling, polyester cargo sling
1合成纖維吊帶系列：柔性吊帶高強纖維吊帶合成纖維吊裝帶扁平吊帶丙綸扁平吊帶酸洗吊帶緊固帶捆綁帶石油管道專用吊帶吊管帶吊裝帶起重吊帶牽引帶，鋼管酸洗吊裝帶，防割型吊裝帶，耐酸繩帶，耐酸吊裝帶，管道吊裝帶，耐磨型吊裝帶，合成聚酯吊帶，石材吊帶，大噸位重磅吊裝帶，園吊帶，高強纖維柔性吊裝帶，防酸吊帶，滌綸吊帶，石材專用吊裝帶，石材專用吊帶，滌綸吊裝帶，石材大板吊帶，丙綸吊帶，石材起重吊帶，錦綸吊帶，石材吊裝帶，石膏板用吊裝吊帶，石材吊帶，集裝箱防風帶，貨車捆綁帶，收緊器，栓緊器，緊固器，拖帶，鋼管吊裝帶，圓套帶，尼吊裝帶，鋼管吊裝帶，板材吊裝帶石板吊裝帶，圓環吊裝帶，防火吊裝帶，防火吊帶，大噸位吊帶，轉子吊裝帶，電力吊裝帶合成纖維扁平化纖吊索雙層環眼扁平吊索多層環眼扁平吊索，滌綸吊裝帶，一次性吊裝帶，合成纖維扁平化纖吊索雙層環眼扁平吊索多層環眼扁平吊索扁平環形吊索玻璃吊帶，玻璃吊裝帶，玻璃專用吊帶，玻璃專用吊裝帶，寬型重磅扁平化纖吊索圓狀環形吊索組合吊索，柔性穿絲吊裝帶，圓筒式吊裝帶，無極吊帶，一次性吊裝用吊帶Petroleum and related products - determination of the hydrolytic stability of fire - resistant phosphate ester fluids
石油和相關產品.測定耐火磷酸酯液體的水解穩定性Under that condition the strain can produce the most concentration of the bioactive compounds. the physical and chemical properties of the actibacterial compounds have been studied, the results showed the bioactive substance has heat stable, acidity and weakly alkali stable. it can be dissolved in acid water, chloroform solvent, can not be dissolved in ethyl acetate, petroleum ether, alkali water. the result of thinlayer chromatography showed the bioactive compounds can give off blue and green fluorescence in the uv light. the paper chromatography demonstrate the bioactive substance may be a new construct compounds
研究表明，該活性物質具有較強的熱穩定性， ph 9的條件下能穩定存在，但ph 12的強堿性條件下活性物質的抗菌活性幾近喪失；活性物質易溶於氯仿、酸性水、不溶於乙酸乙酯、石油醚、堿性水；薄層層析顯示活性物質在紫外光下能發藍綠色熒光等特點；由捷克八溶劑系統紙層析鑒定該抗菌活性物質不屬於四大類抗生素，可能為一新的抗菌活性物質。Liquid petroleum products - determination of fatty acid methyl esters in middle distillates - infrared spectroscopy method
液化石油製品.中間餾出物中脂肪酸甲酯的測定.紅外光譜測定法Properties : completely dissolved in solvent such as coal tar system, esters, turpentine and plant oil. undissolved in solvent such as alcohol and partly dissolved in oil
性能:在煤焦系，酯類溶劑?松節油?植物油中完全溶解，不溶於醇類溶劑，在石油系溶劑中部分溶解。Petroleum products. determination of alkyl nitrate in diesel fuels : spectrometric method
石油產品.柴油燃料中硝酸烷基酯的測定.光譜測定法Petroleum products - determination of alkyl nitrate in diesel fuels - spectrometric method iso 13759 : 1996 ; german version en iso 13759 : 1996
石油產品.柴油中硝酸烷基酯含量測定.光譜法Methods of test for petroleum and its products - petroleum products - determination of alkyl nitrate in diesel fuels - spectrometric method
石油和石油產品的試驗方法.石油產品.柴油燃料中硝酸烷基酯的測定.光譜法Polyurethane waterproof material was prepared by using polyurethane prepolymer as matrix material and petroleum resin as modifying agent
摘要以聚氨酯予聚體為基料，以石油樹脂為改性劑，研製成功了石油樹脂聚氨酯防水材料。Iso - l - tcd, petroleum products and lubricants ; triaryl phosphate ester turbine control fluids category iso - l - tcd ; specifications
石油產品和潤滑劑.三芳基磷酸酯渦輪控制液Iso - l - tcd. petroleum products and lubricants - triaryl phosphate ester turbine control fluid category iso - l - tcd - specifications
石油產品和潤滑劑.三芳基磷酸酯渦輪機控制液Iso - l - tcd. petroleum products and lubricants - triaryl phosphate ester turbine control fluids category iso - l - tcd - specifications
石油產品及潤滑劑.三芳基磷酸酯渦輪機控制液Iso - l - t petroleum products and lubricants - triaryl phosphate ester turbine control fluids category iso - l - tcd - specifications iec 61221 : 2004 ; german version en 61221 : 2004
石油產品和潤滑劑.三芳基磷酸酯渦輪機控制液This product mainly used in polyethylene, polyamide, polyester, polyvinyl chloride, abs resin and all kinds of synthetic rubber and petroleum products, is highly effective to polypropylene
本產品主要用於聚乙烯、聚酰胺、聚酯、聚氯乙烯、 abs樹脂一級各種合成橡膠和石油產品中，對聚丙烯有卓效。R - butyrolactone is one of the major chemical materials which has an extensive application in pharmaceuticals, pesticides, petrochemicals, etc.
R -丁內酯是重要的有機化工原料，在醫藥農藥石油化工等方面有著廣泛的應用。分享友人