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compacting     
相关语句
  密实
     Review on Self Compacting Concrete
     自密实混凝土综述
短句来源
     State of Arts on Research and Application of Self Compacting High Performance Concrete
     自密实高性能混凝土研究与应用现状
短句来源
     Advanced Research and Application of Self Compacting Concrete
     自密实混凝土的应用与研究进展
短句来源
     Comments on mix calculation method of self compacting high performance concrete
     浅谈自密实高性能混凝土配合比的计算方法
短句来源
     The article introduced the design and selection of mix ratio about self compacting concrete in the Hua Ying Shan Tunnel,also construction technology of the self compacting concrete and quality control in the process of canstraction.
     文章简单介绍了华莹山隧道自密实混凝土配合比的设计、选定 ,以及自密实混凝土的施工技术和施工过程中的质量控制
短句来源
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  压实
     Evaluation and Analysis of Compacting Capability for Single Drum Vibratory Compactors
     单轮振动压路机技术性能参数计算——单轮振动压路机压实能力的评价与分析
短句来源
     The relationship between compactness and compacting factory (E/M value) was studied.
     研究了样品压实密度与压实参数E/M值(炸药量/粉末量)之间的关系。
短句来源
     1. On the basis of introducing the vibratory compaction mechanism , impacts of the vibratory road roller's main working parameters on compacting effect are analysed by building the dynamic model of vibratory road roller.
     1.在介绍振动压实机理的基础上,通过建立振动压路机动力学模型,分析了振动压路机主要工作参数对压实效果的影响,给出了振动压路机压实智能控制系统的基本组成,为振动压路机压实智能控制系统的研究与设计奠定了理论基础。
短句来源
     Analysis on Compacting of Soil Subgrade of Highway
     公路土质路基压实分析
短句来源
     Automatic Compacting Control System of Central Control Station
     中央控制站的压实控制自动化系统
短句来源
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  压制
     The pre-powders of Cu-0.5Cr,Cu-0.8Cr,Cu-1.5Cr were produced by atomizing process,and the ageing treatment was carried out after compacting.
     应用雾化方法制备了Cu-0.5Cr、Cu-0.8Cr和Cu-1.5Cr的3种预合金粉末,经压制成型后对其进行时效处理。
短句来源
     Liquid Phase Compacting of Fe-Sn-Cu Powder Alloy
     Fe-Sn-Cu粉末合金的液相压制
短句来源
     Nanocrystalline Nd_2Fe_14 B/α-Fe magnetic material was prepared successfully by cold compacting the mixture obtained by mechanically milling the as-cast Nd_2Fe_ 14 B alloy powder and α-Fe powder, and then by capsule-extruding the cold compated billet.
     本文将成分为Nd2Fe14B(原子比)铸态合金和羰基铁粉的混合粉末进行搅拌式机械球磨,对其球磨后的合金粉末进行冷压制坯、包套挤压获得纳米晶复相Nd2Fe14B/α-Fe永磁合金。
短句来源
     The optimum range of compacting pressure and sintering parameters are 250MPa,540℃ for 2h,respectively.
     压制压力250MPa、烧结温度540℃保温2h为最佳的制备工艺参数。
短句来源
     The relationship between the green density and compacting pressure of the CeO_2-Gd_2O_3 composite powders was measured.
     测定了CeO2-Gd2O3纳米复合粉压制过程中压坯密度与成形压力的关系曲线。
短句来源
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  镇压
     Through 3-year field tests, putting forward a preliminary dry seeding technique plan: Before rain season is coming every year, using flat strip-sowing, sowing norm is 45~60 kg/hm 2, covering soil is 0~0.5 cm, and compacting after sowing.
     经过3年田间试验,初步筛选出一套旱种技术方案:在每年雨季到来之前,采用平条播,播量45~60kg/hm2,覆土0~0.5cm,播后镇压
短句来源
     Design and Performance of Dividing and Compacting Device by Returning High Straw
     高秆翻埋还田分禾镇压装置的设计与性能
短句来源
     A Preliminary Study on the Compacting Wheat for Frost Protection
     冬小麦镇压防霜的初步研究
短句来源
     the practical period for compacting crop to prevent frostbite is 1~16 days before jointing stage.
     能实际使用的镇压时期为拔节前 16d到拔节期 ,旺麦宜早 ,正常麦以晚一点为好。
短句来源
     A2, A3 the low seeding density treatments ,each had 4.5 and 3.0 million basic seedlings per hectare, then added compacting in seeding stage and applying fertilizer in three leaves stage , fertilization for head sprouting . So the appearing of tillers , accumulation of dry matter ,form characters yield and yield components of main stem and tillers were studied by field experiment .
     稀植处理(A2、A3),基本苗450×10~4/hm~2、300×10~4/hm~2,并进行苗期镇压,施三叶肥、穗肥等稀植管理,通过对品种分蘖发生动态、干物质积累动态、分蘖形态指标和主茎与分蘖产量及产量构成因素进行调查分析,结果表明:
短句来源
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      compacting
    The structural relaxation is studied in amorphous magnetic screens produced by plasma deposition and explosive compacting from an amorphous metallic ribbon.
          
    It is shown that polycrystals in the shape of plates, made by compacting powders of solution-grown organic crystals at premelting temperatures, exhibit better characteristics.
          
    The strength at various hardening times, compacting efficiency, and leaching rate of the resulting monolithic concretes were analyzed.
          
    The compacting efficiency in concretes prepared by two different modes is similar.
          
    Cationic oligopeptides, including the amphipathic α-helical peptides, are applied to the targeted delivery of DNA to eukaryotic cells due to their DNA-compacting properties and the ability to destabilize the cell lipid bilayer in some cases.
          
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    The central core of an earth dam is being placed by flood deposit red clay of weathered limestone. The original design specifies that the core material should be placed at a moisture content of 21-24%, to a dry density of 1.55g/cm~3 with 90% of good qualification, by employing 15-ton sheepsfoot rollers with 24 roller passes in 8—10 cm compacted layers. The natural water content of soils in the borrow areas is about 30%, and the borrow materials are excavated horizontally in layers by agricultural plowing method....

    The central core of an earth dam is being placed by flood deposit red clay of weathered limestone. The original design specifies that the core material should be placed at a moisture content of 21-24%, to a dry density of 1.55g/cm~3 with 90% of good qualification, by employing 15-ton sheepsfoot rollers with 24 roller passes in 8—10 cm compacted layers. The natural water content of soils in the borrow areas is about 30%, and the borrow materials are excavated horizontally in layers by agricultural plowing method. The wet soils are dried by plowing and aerating and then hauled to the dam. In 1964, prior to the flood season, the rate of construction was rather slow, and dry loose layer, smooth surface, shear failure and poor bond between layers were often found, and there also occurred the splitting of soil layers after wetting by rain. As a result, the quality and speed of construction were greatly affected In order to cope with these problems, laboratory and field compaction tests have been carried out which show that by reducing the placement dry density to 1.50 or 1.51 g/cm~3, and increasing the moisture content to 24—28%, the requirement of stability and seepage can still be satisfied, but with a remarkable improvement of the plasticity and uniformity of the darn core, thereby those defects in quality control during construction can be basically prevented. Through the field compaction tests corresponding method of construction and compaction parameters are determined, and then actually applied in construction. The field compaction tests have also shown that the rubber-tired roller is superior to sheepsfoot roller, because the former permits higher construction moisture content, and excavation on vertical surface in the borrow area is also possible. The intervention between hauling the soil by trucks onto the dam and compacting the soil by sheepsfoot rollers is avoided. It has the advantage of simultaneously raising the dam core and the outer shells. A better uniformity of compaction is obtained and the bond between layers is also good enough though not so excellent as that produced by sheepsfoot-roller.

    我国南方一座较高土坝的心墙采用了石灰岩风化洪积红粘土填筑,原设计填筑标准为干容重1.55克/厘米~3,合格率90%,含水量21~24%,用15吨羊足碾,压24遍,每层压实土厚度8~10厘米.料場天然含水量30%左右,用农业机耕方法逐层水平开采,翻晒碎土后上坝.1964年汛前施工中发现生产效率低,经常发生干松土层、光面、剪力破坏、结合不良等质量事故,还有雨后浸水分层现象,经常返工,对施工进度与质量都有很大影响.为了解决这些问题,曾进行了试验室及现場碾压试验,证明将填筑干容重降低互1.50或1.51克/厘米~3,含水量提高到24~28%,仍能满足稳定及防渗要求,而填土塑性、均勻性及耐水性有显著改善,基本上可解决施工中发生的一些质量事故,并通过现場碾压试验确定了相应的施工方法及压实参数,在工程上已实际采用.现場碾压实验中也表明气胎碾比羊足碾压实有显著的优点,可进一步提高施工含水量,有可能在料場使用立采工艺,解决汽车运土上坝与羊足碾碾压之间的矛盾,工效高,有利于坝壳与心墙平起,压实质量较均匀等,结合面质量也能满足要求,建议推广使用.

    Three types of settling-compacting paddy soils:albic soils,yellow sandy soils and saline sandy soils were investigated.The settling-compactability of the soils were discussed in relation to their physical properties.It is suggested that compaction,volume weight of submerged soil and settling rate may be used as the diagnostic indices of soil settling compactability.

    本文研究了三类汀板土壤:白土、黄沙土和咸沙土,讨论了土壤汀板性的物理含义。文中提出建议,可以土壤坚实度、浸水容重和沉淀曲线作为此类土壤的诊断指标。

    The special feature of the new testing method is that a cake-like sand test piece with V-shape groove on its surface is heated from bottom to top in a new-designed high temperature shock heating furnace. The fracture phenomenon and spalling time of the test piece can be observed continuously through a sight hole. The testing results are always concentrated and quite stable with same tendency for the formation of scabbing defect on castings. Many factors, such as the SiO2 content of the moulding sand used, its...

    The special feature of the new testing method is that a cake-like sand test piece with V-shape groove on its surface is heated from bottom to top in a new-designed high temperature shock heating furnace. The fracture phenomenon and spalling time of the test piece can be observed continuously through a sight hole. The testing results are always concentrated and quite stable with same tendency for the formation of scabbing defect on castings. Many factors, such as the SiO2 content of the moulding sand used, its compacting degree and compactability, the addition of bentonite, fuel oil, dextrin, starch, sulfite lye, coal dust, etc. have been studied by this method to determine their effects on the spalling time. As a matter of fact, the tendency of the anti-scabbing capability of these moulding sands is thus clearly given.

    新试验方法的特点是采用表面有V形沟槽的圆饼形型砂试件,在激热试验炉中受 到自下而上的高温烘烤。通过窥视孔可连续观察试件表面的脱皮现象和得出激热开裂时 间。试验结果表明测得数值相当集中并且稳定,而且与铸件上生成结疤缺陷的趋势完全一致。还研究了原砂的SiO2量、紧实程度、紧实率、膨润土、重油、糊精、淀粉、纸浆废 液、煤粉等因素对激热开裂时间的影响。都能清楚地给出了有关砂型抗结疤性能的趋向。

     
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