水泥的

It is indicated that the technical indexes of the soil stabilized cement are different from those of ordinary cement. Higher contents of f-CaO,SO3 and alkali in the soil stabilized cement are permitted.

用于稳定土的水泥其技术指标与普通水泥有很大差异，可允许水泥中含有一定数量的f-CaO，SO3和碱含量。

At 12–15 years, Charnley reported continuous radiolucent demarcation around cemented cups in 14% of patients.40 The failure rate was greatest in young patients, and Barrack and colleagues reported 44% loosening of cemented sockets at 12 years in individuals younger than 50 years.54 Cementless acetabular cups are hemispherical in shape and most are entirely porous-coated for bone ingrowth.

术后12-15年时，Charnley在14%患者中发现骨水泥髋臼杯周边存在连续的透亮线。年轻患者中假体失败率最高，Barrack报道为小于50岁的患者中术后12年时44%发生骨水泥套松动。非骨水泥髋臼杯为半球型，大部分全层喷涂多孔表面以促进骨长入。

Site allocation of cement clinker grinding station is the key step of optimizing the logistics system of cement industry,it is more important to select a proper method for estimating the system.

通过对水泥粉磨站选址影响因素的分析，构建了水泥粉磨站选址评价的指标体系，在此基础上，运用多层次灰色评价方法建立了水泥粉磨站选址多层次灰色评价模型。

For patients unfit for long revision procedures, and when the cement mantle is well preserved, especially in the peritrochanteric region, cement-in-cement revision to a longer stem, following adequate preparation of the old mantle to promote bonding between new and old cement, is possible.9 Unpublished data and personal communication with the Hip Unit of the Royal Devon and Exeter Hospital have provided us with encouraging results in this group of patients.

由于患者不适宜进行时间较长的翻修手术，当其骨水泥壳套得以完整保存的时候，尤其是在粗隆周围区域，对老的壳套进行足够的准备工作，以促进新老骨水泥之间的结合后，进行更长柄的骨水泥对骨水泥翻修也是可能的[9] 。从英国得文暨艾克斯特皇家医院髋关节科提供给我们的一些未发表的数据和个人的信息来看，这一组患者有着令人鼓舞的结果。

For patients unfit for long reision procedures, and when the cement mantle is well presered, especially in the peritrochanteric region, cement-in-cement reision to a longer stem, following adequate preparation of the old mantle to promote bonding between new and old cement, is possible.9 Unpublished data and personal communication with the Hip Unit of the Royal Deon and Exeter Hospital hae proided us with encouraging results in this group of patients.

由于患者不适宜进行时间较长的翻修手术，当其骨水泥壳套得以完整保存的时候，尤其是在粗隆周围区域，对老的壳套进行足够的准备工作，以促进新老骨水泥之间的结合后，进行更长柄的骨水泥对骨水泥翻修也是可能的[9] 。从英国得文暨艾克斯特皇家医院髋关节科提供给我们的一些未发表的数据和个人的信息来看，这一组患者有着令人鼓舞的结果。

To reveal the influence mechanism of ground granulated blast-furnace slag and fly ash on the physical and mechanical behaviors of cementitious materials, and to provide some necessary parameter for computer simulation of the physical and mechanical issues of the cementitious materials, the elastic modulus of cement, GGBS and fly ash particles were measured in situ by nano-indentation techniques.

为了揭示磨细矿渣和粉煤灰对水泥基材料物理力学行为的影响机理，为应用计算机模拟掺有矿渣或粉煤灰的水泥基材料的物理力学行为提供必要的力学参数，应用纳米压痕技术实测水泥、磨细矿渣和粉煤灰颗粒的弹性模量。用酚醛树脂混合水泥、磨细矿渣或粉煤灰颗粒后再进行磨光、抛光和超声波清洗等工艺制得表面光洁度符合纳米硬度仪要求的试样。

Thin elastic foundation of cement concrete pavement design theory, in-depth analysis is to arrive at the grass-roots non-uniform bearing broken concrete pavement panels, gnawing edge, the wrong units, as well as the main reason for structural damage produced by taking certain measures to improve the concrete between the road surface and the grass-roots support conditions, and improve durability of the cement concrete pavement and stability.

面层与基层之间存在脱空现象和不均匀支承的状况，致使水泥混凝土路面的承载力下降。通过水泥混凝土路面弹性地基薄板的设计理论，深入分析得出基层的不均匀支承是水泥混凝土路面断板、啃边、错台、以及产生结构性破坏的主要原因，通过采取一定措施改善砼路面面层与基层之间支撑条件，提高了水泥混凝土路面的耐久性和稳定性。

Thin elastic foundation of cement concrete pavement design theory, in-depth analysis is to arrive at the grass-roots non-uniform bearing broken concrete pavement panels, gnawing edge, the wrong units, as well as the main reason for structural damage produced by taking certain measures to improve the concrete between the road surface and the grass-roots support conditions, and improve durability of the cement concrete pavement and stability.

面层与基层之间存在脱空现象和不均匀支承的状况，致使水泥混凝土路面的承载力下降。期刊文章分类查询，尽在期刊图书馆通过水泥混凝土路面弹性地基薄板的设计理论，深入分析得出基层的不均匀支承是水泥混凝土路面断板、啃边、错台、以及产生结构性破坏的主要原因，通过采取一定措施改善砼路面面层与基层之间支撑条件，提高了水泥混凝土路面的耐久性和稳定性。

The net cement with bentonite can form hydrogen key which can improve the felt of the systematic and are wail for eventual strength; The main mechanism of J-85 accelerator to accelerate concrete coagulating are in alkalescence condition to make aluminate and gypsum link and block the building of calcium and aluminium sulphate around cement granule; Polypropylene acid can improve early strength of cement through altering the thickness of hydroxide in cement grout.

添加膨润土后的水泥净浆中形成了氢键，提高了体系的粘结性，对后期强度发展有利； J-85速凝剂加速混凝土凝结的主要机理就是在碱性条件下，使铝酸盐和石膏结合，阻碍水泥颗粒周围的硫铝酸钙即钙钒石的生成，从而使水泥迅速凝结；聚丙烯酸通过改变水泥浆体中羟基的浓度从而提高水泥试块初期强度。

AbstractObjectives1 Correlate bone mineral densityto vertebral compressive strengths.2 Consummate the technique for percutaneous polymethylmethacrylate vertebroplasty and observe the pattern of PMMA imaging distribution.3 Determine the strength and stiffness of osteoporotic with or without vertebroplasty with PMMA bone cement.4 Correlation of BMD,insertion torque and pull-out strengths of pedicle screws.5 Ascertain whether augmentation with PMMA bone cement can enhance pedicle screw fixation in the osteoporotic spine.6 Ascertain whether augmentation pedicle screw fixation with PMMA bone cement can enhance the stability of unstable thoracolurner burst fractures of osteoporotic spine.

目 的1、测试椎体压缩强度，分析强度与骨矿物质密度（bone mineral density，BMD）的相关关系。2、观察经皮椎体成形术后聚甲基丙烯酸甲脂（polymethylme- thacrylate，PMMA）骨水泥在椎体内的形态学分布及影像学表现。3、比较PMMA骨水泥骨质疏松椎体成形术前/后椎体最大抗压力和压缩刚度的变化。4、分析椎体BMD、螺钉最大旅入力矩和最大拔出力三者之间的关系。5、分析PMMA骨水泥强化骨质疏松椎弓根螺钉后的螺钉的最大轴向拔出力和拔出刚度的变化。6、评价PMMA骨水泥强化骨质疏松椎弓根螺钉脊柱内固定对不稳定型胸腰椎损伤的即刻稳定性和反复载荷后的稳定性。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。