預保溫 的英文怎麼說
中文拼音 [yùbǎowēn]
預保溫
英文
pre incubation-
Performed insulating pipes for polyurethane pur foamed plastics
聚氨酯泡沫塑料預制保溫管The following results were found, i. e., the water ratio affects obviously the acoustic wave velocity of rock sample ; the wave velocity is higher in saturated rock samples than in unsaturated ones ; and it decreases gradually with the strain of samples during uniaxial compression ; and also with the lengthening holding time at 160 ; when heating the samples the acoustic wave velocity increases slightly in initial stage and comes to the peak value at 60, then decreases gradually with increasing temperature ; meantime, there is a certain temperature effect on rock samples size
實驗發現含水率對波速影響比較大，飽和巖樣的聲波傳播速度高於不飽和巖樣的聲波傳播速度；人工預制裂紋對聲波傳播速度影響不大；單軸壓縮條件下，聲波傳播速度隨應變增加逐漸降低；在同一溫度（ 160 ）下，波速隨保溫時間的增加而逐漸降低；在對巖樣逐漸加熱情況下，初始加熱階段波速略有升高，當溫度達到60時，巖樣波速達到峰值，之後隨著溫度繼續升高其波速逐漸下降；波速隨溫度變化具有一定的尺寸效應。The raw materials, the composition, the time of milling, the calcining temperature, the different additives, the sintering temperature and the sintering parameters were investigated. the result showed : it was advantaged to obtain high initial permeability mnzn ferrite with stable frequency characteristic using high - purity raw materials ; in order to obtain mnzn ferrite with high properties, we must control strictly the composition ; it could improve the properties of mnzn ferrite by optimizing calcining temperature. the lower calcining temperature made the permeability higher, and the higher calcining temperature could promote the frequency characteristic of permeability ; we chosen the right time of milling according to the requirement of power diameter ; in order to improve the properties of mnzn ferrite, it is necessary to add effective additives. in this dissertation, the influence of bi2o3 、 moo3 、 k2co3 、 co2o3 were investigated ; the sintering temperature, the time of heat - retaining and sintering parameters were the key factors of preparing high permeability mnzn ferrites
研究結果表明:採用高純度的fe2o3有利於獲得高起始磁導率且頻率特性優良的鐵氧體;為了制備所需性能的鐵氧體，需要嚴格控制配方中各種原材料的含量，優化配方;由於粉體活性受預燒條件的影響，所以對不同要求的鐵氧體選擇的預燒條件就不一樣，適當降低預燒溫度有利於獲得較高的起始磁導率，而為了獲得良好的頻率特性可以適當地提高預燒溫度;根據對粉體顆粒粒徑的不同需求，可以選擇不同的球磨時間;而有效的添加劑是改善材料性能的必要條件，本文在添加劑的研究中主要對bi2o3 、 moo3 、 k2co3 、 co2o3的影響分別作了詳細地討論;燒結溫度、保溫時間和燒結氣氛是高磁導率mnzn鐵氧體制備最關鍵的工藝，適宜的燒結工藝可以獲得理想微結構和組成，從而得到高性能的鐵氧體材料;而從材料的微結構上來看，要提高材料的截止頻率，就要適當地細化晶粒、增加晶粒內部的氣孔。During the temperature fields, the results indicate that the processing parameters such as the extrusion velocity, casting temperature, perform preheating temperature, die preheating temperature and so on are important for the temperature fields besides the dwell time. they are must be in concordance each other to the deforming zone is in the quasi - solid state, and the stable semi - solid extrusion is implemented. during the deforming fields, the hyperbolic sine thermo - rigid - viscoplastic fem model is selected according to the forming feature of the process, and the variations of the stress - strain fields are studied
在溫度場的模擬中，模擬結果表明，保壓時間是影響製件成形質量的關鍵因素之一，擠壓速度、液態金屬澆注溫度、預制體預熱溫度和模具預熱溫度等工藝參數對溫度場的影響也很大，需進行參數之間的協調，只有當變形區內部始終維持準固態時，才能實現穩定的液-固擠壓成形過程；在變形場的模擬中，根據液態浸滲擠壓的成形特徵，選用了雙曲正弦剛-粘塑性有限元計算模型，研究了變形過程中應力應變場的變化規律，研究了模角對變形和金屬流動的影響及變形力的變化過程和其影響因素。Preformed directly buried insulating pipes for polyurethane foamed plastics and glass fiber reinforced plastics protect layers
玻璃纖維增強塑料外護層聚氨酯泡沫塑料預制直埋保溫管The modes selection of directly buried installation for hot - water heat - supply pipeline, the design and construction of directly buried installation with and without expansion joint and the quality assurance of prefabricated directly buried insulating pipe are discussed with a practical engineering example
摘要結合工程實例，探討了熱水供熱管道直埋敷設方式的選擇，有補償和無補償直埋敷設方式的設計與施工及預制直埋保溫管質量的保證。The alloy component and the process parameters of the precision casting ( including the exit temperature from furnace, pouring temperature, mould preheating temperature, holding time, cooling form ) have a certain influence on the problem of the blade brittles
摘要合金含量、精鑄工藝參數（出爐溫度、澆鑄溫度、模殼預熱溫度、保溫時間、冷卻方式）對葉片脆性問題存在一定的影響。The polystyrene froth board other name forth board, the eps board are by includes the volatile liquid foaming agent to be possible the sending polystyrene, after heats up sends the white which heats up in the mold takes shape enable it in advance to have the tiny structure especially ， mainly to use in to construct the wall, the house surface heat preservation, the compound board heat preservation, the cold storage, air conditioning, the vehicles, the ships heat preservation heat insulation, the floor heats, use and so on decoration carving is extremely widespread
聚苯乙烯泡沫版? ?又名泡沫版、 eps板是由含有揮發性液體發泡劑的可發性聚苯乙烯珠粒，經加熱預發后在模具中加熱成型的白色物體，其有微細閉孔的結構特點，主要用於建築墻體，屋面保濕，復合板保溫，冷庫、空調、車輛、船舶的保溫隔熱，地板採暖，裝潢雕刻等用途非常廣泛。Preformed directly buried steam insulating pipes technical - specification for heating in city
城鎮供熱預制直埋蒸汽保溫管技術條件Specification of construction and acceptance of heat insulation for buried high temperatrue steel pipeline
直埋式鋼質高溫管道保溫預制施工及驗收規范In order to make investigators know about the current research state of preparation of the carbon / graphite materials with high density and strength from mesocarbon microbeads, and direct the research, development and production, in this review, the influence of preparaed mesocarbon microbeads from various raw materials and methods of preparation, ball diameter of carbosphere, preoxidation temperature and time, moulding pressure and time, heat treatment temperature and heating rate, holding time on the mechanical properties and microscopic structure of carbon / graphite product were discussed by us
摘要為了對中間相炭微球制備高密高強炭石墨材料的研究現狀有所了解，並且對實驗和實際生產起到指導作用，本文通過參閱大量中外文獻，討論了不同原料及制備方法制得的中間相炭微球、炭微球的球徑、預氧化溫度及時間、成型壓力及時間、熱處理溫度及升溫速率、保溫時間對炭石墨製品的力學性能及微觀結構的影響。Samples with various compositions were prepared through different calcined temperature, sinter temperature and different maintained time at sinter temperature. the structure, density, shrinkage, and piezoelectric properties were investigated
選取部分組成點，採用不同的預合成溫度、燒結溫度和保溫時間制各樣品，測試各樣品的晶體結構、體積密度、線收縮率和壓電性能。The more favorable experiment conditions of preparing anatase nanometer tio2 powder are obtained from a lot of data. preparation technology of rutile nanometer tio2 powder is researched on the base of experiment of anatase nanometer tio2 powder. the influences of enclosure dose ' s quantity, preroasting temperatures phase - transition accelerant ' s quantity and calcining intensity and so on on the properties of inclusion body - zntio3 / ti ( oh ) 4, granule size and properties of rutile nanometer tio2 powder are discussed
在銳鈦型納米tio _ 2粉體的制備基礎之上，進一步研究了金紅石型納米tio _ 2粉體的制備工藝，探討了包覆劑用量、預焙解溫度、晶型促進劑量及焙燒溫度和保溫時間等因素對znco _ 3 / ti （ oh ） _ 4沉澱包覆體性能、金紅石型納米tio _ 2粉體產品的粒度和性能的影響。This paper takes sudan three - seven oilfield project for an example to illustrate the requirement for raw and processed materials, prefabrication process of foam yellow jacket and key points of field joint operation, and summarizes briefly relevant experience and lesson, finally puts forward some suggestions of design and construction for future projects
文章以蘇丹三七區油田工程為例，介紹了對原材料性能指標的要求、泡沫黃夾克預制工藝、現場補口操作要點，並簡要總結了在蘇丹生產施工泡沫黃夾克防腐保溫層的經驗和教訓，對今後的設計施工提出建議。At present, the company ranks the top throughout the world in the fields as fluorocarbon dope for plastic and steel, alum - alloy, coiled plate and for steel - structure, and inorganic pre - coating plate, etc
衡峰在塑鋼用氟碳塗料、鋁合金用氟碳塗料、卷材用氟碳塗料、鋼結構用氟碳塗料、光催化陶瓷塗料、無機預塗裝飾板材及預制干掛外墻外保溫系統等領域處于國內領先水平。This paper mainly discussed one type of two - way superposed slab floor with prestress in one way. the lower layer of the superposed floor is precast - prestressed sandwich slab, and the upper layer is cast - in - situ concrete. reinforcements set in the precast slabs lapped with each other at the side of it
與傳統的裝配式預應力樓蓋和現澆樓蓋不同，它是將現代預應力技術和疊合結構體系相結合的一種新式樓蓋形式，具有重量輕、抗裂性強、承載力高、整體性好以及保溫、隔音等諸多優點。In order to find out the mechanism of the soil strength weakening during the period of thawing and the effective prevention measures, some adjustment was made on the traditional triaxial apparatus, together with special frozen soil samples preparation equipment, customized frozen soil samples thawing apparatus and external heat preservation facilities, a new apparatus for investigating the weakening characteristic of frozen soil was made successfully
為探明路基土融化過程中的強度弱化機理，在此基礎上制定有效的凍害預防措施，對國產土工靜力三軸儀進行了一系列改造，並配以專用的凍土試樣制備設備、凍土試樣融化加熱設備和外部保溫設施，共同製成凍土解凍時的強度弱化試驗儀。Eps, pre - foamed by expandable polyester resin and then formed in moding, is characteristic of being anti - shock and - impact, thermo - protective and heat - resistant, and is a king of low - priced packing material
發泡膠由可發性聚苯乙烯櫥脂，經先預發再模塑發泡成型而成。該產品具有防震、抗沖擊之性能、保溫隔熱，是較為兼價的包裝材料。In harsh climate region, mere exists obvious local stress concentration near the upstream and downstream of the exposed - in - winter horizontal surface of the rcc dam, and the surface of spillway bucket though heat insulation is applied on the surfaces, tensile stress still exceeds the allowable one of concrete. this paper puts forward to adopt preset crack to avoid occurring more cracks. the special crack model is applied to simulate the dam preset crack, and the joint model of fracture mechanics is induced into strain - soften model
在結構措施方面，針對嚴寒地區高碾壓混凝土重力壩壩體越冬層面的上、下游面附近及溢流壩堰面反弧段表面有明顯的局部應力集中象現，在已採取一定的表面保溫防護的條件下，拉應力仍然超過混凝土容許拉應力，開裂難以避免，進而提出設置碾壓混凝土壩表面預留縫結構措施並對該措施進行深入研究，包括預留縫的擴展穩定和壩體沿預留縫的穩定性，以避免大壩在無措施部位開裂，解決大壩越冬層面水平施工縫的開裂問題。3. cu2o and cuo are deoxidized into cu when the oxidized powders are kept at 1073k for 30min in gas protected furnace, in which graphite is used for heating unit, while cr2o3 can not be deoxidated. so the oxidized powders can be made into cr2o3 / cu compound powders
在以石墨為發熱體材料的氣氛保護爐中，預氧化后的粉末在1073k保溫30min后， cu _ 2o被還原成cu ，而cr _ 2o _ 3穩定存在，因此可將氧化后的粉末製成cr _ 2o _ 3 cu復合粉末。分享友人