查询词典 compressive

Objective To investigate the efficacy of compressive cannulated screw fixation in treatment of odontoid fractures.

目的探讨中空加压螺钉内固定治疗枢椎齿状突骨折的疗效。

Result Followed up by 5～23 months , all cases fixated with anterior compressive screw of odontoid.

结果 15例手术均采用单枚螺钉，螺钉退出1例，螺钉偏心固定1例，位置优良13例。

Methods Anterior internal fixation with compressive cannulated screw was done in 24 patients with odontoid fractures from April 2004 to March 2007, including 13 patients of type Ⅱ fractures and 11 type Ⅲ.

方法从2004年4月至2007年3月应用颈前路中空加压螺钉内固定治疗齿状突骨折24例，其中Ⅱ型13例，Ⅲ例11例。

It has been found that compressive and flexural strength increases with increment of the density of lightweight alumina bubble ceramics surface-modified by aluminum dihydrogen orthophosphate and orthophorphoric acid due to in-situ formation of aluminum orthophosphate, and the results of the two surface-modifier were similar.

在原位反应生成磷酸铝烧结轻质氧化铝空心球陶瓷中，磷酸二氢铝、磷酸两种结合剂结合陶瓷的耐压强度和抗折强度随配方密度提高而提高，且较为相近。

This paper mainly deals with these two parts:l.the effect of hydrosoluble HP,fibermesh and FDN on cement mortars bend resistant strength and compressive strength under the same operating conditions and with different HP mixtures;2.the effect of HP,FDN moderator,fly ash on the durability of concrete.that is the performance of resisting osmose,erosion and freeze thawing.

研究了HP水溶性高分子"纤维"、FDN高效减水剂与粉煤灰双掺配制的高性能混凝土的耐久性(抗渗透、抗硫酸盐侵蚀、抗冻融性能)。试验结果表明：HP水溶性高分子"纤维"对水泥砂浆和混凝土具有显著的增韧、增强作用，且水泥砂浆的抗压强度随着HP水溶性高分子"纤维"掺量的增加(2%-6%)而提高，抗折强度则降低；在混凝土中加入HP水溶性高分子"纤维"后，抗压强度随着掺量的增加2。

Combining with the National Natural Science Foundation ofChina(No.50478032), following researches were done in this thesis: 1 The variation regularity of the ultimate anti-bending capacity of therectangular-sectioned beam with different corrosion has been obtained through thequalitative analysis of 48 beams (32 corroded beams and 12 comparing beams) withaccelerated corrosion; 2 The conclusion has been obtained that the strain of corroded steel bar andconcrete no longer fit in with the assumption of plane section through the analysis ofthe strain data, the strain relation of steel bar and concrete in the mid-span section ofvariously corroded beams at ultimate has been obtained. Through the building of newgeometric relation, the expression of the height of compressive area in the corrodedbeam with rectangular section has been deduced, and the formula with corrosion rateas the main variable for the anti-bending capacity of the corroded concrete beam hasbeen suggested and verified by experiment.; 3 The influence of steel bar corrosion and the concrete regression to the flexureductility coefficient of the corroded structure component has been analyzed. Based onthe relation of steel bar and concrete at yield and ultimate, the expression for theflexure at yield and ultimate of corroded reinforced concrete beam, and the model forthe calculation of the flexure ductility has been built.

本文结合国家自然科学基金项目(50478032)"既有钢筋混凝土桥梁时变可靠度研究"，主要进行了以下研究工作： 1通过对48根快速锈蚀钢筋混凝土矩形截面梁(32根锈蚀梁和12根对比试验梁)数据的定性分析，得到了不同锈蚀率下，锈蚀钢筋混凝土矩形截面梁极限抗弯承载力的变化规律； 2通过对应变数据的分析，论证了锈蚀构件钢筋和混凝土的应变不再符合平截面假定的结论，并通过回归分析得出了不同锈蚀率的螺纹钢筋梁和光圆钢筋梁在极限弯矩作用下，跨中截面处钢筋应变和钢筋处混凝土应变的关系，通过构造新的几何关系，得出了锈蚀钢筋混凝土矩形截面梁计算受压区高度的表达式，既而得出了以锈蚀率为主要变量的锈蚀钢筋混凝土矩形截面梁的正截面抗弯计算建议公式，并通过试验数据加以验证； 3分析了钢筋锈蚀和混凝土劣化对锈蚀构件曲率延性系数的影响，结合钢筋屈服和极限弯矩两种状态下钢筋和混凝土的应变关系，分别得到了锈蚀钢筋混凝土矩形截面梁屈服曲率和极限曲率的计算表达式；既而推导出曲率延性系数的计算模型。

Its characteristics are a material can be adjusted according to demand, crude, medium and small, all kinds of complete specifications; without Flake, no smooth body, polyhedrosis Duolengbaozheng compressive strength.

其特点是成料能按照需求进行调整，粗、中、细、各种规格齐全；无片状、无光滑体、多角多棱保正抗压强度。

This paper delivered the relationships of uniaxial tensile and compressive stress with strain and bending properties,and felt－bending strength of cement mortar with polyvinyl acetate.

研究掺聚醋酸乙烯水泥砂浆的轴拉和轴压应力—应变关系、抗弯性能以及长期粘结抗弯强度。

The experimental results show that the compressive strength of preform increases with the increasing of fiber volume fraction and binder mass fraction.

试验结果表明，氧化铝短纤维预制件的抗压强度随着纤维体积分数的升高而升高，随着黏结剂质量分数的提高而升高。

Influence of various parameters including ratio of nonprestressed reinforcement, ratio of unbonded prestressing tendon, span-depth ratio, effective prestress, cylindrically compressive strength of concrete, ultimate tensive strength of prestressing tendon, yield strength of nonprestressed reinforcement and loading pattern on the behavior of unbonded prestressed concrete beams and the ultimate stress in tendon, f_, are investigated in detail. Parameters having important influence on second-order effects of externally prest

本文设计了8个系列共76根体内无粘结预应力梁，以及2个系列共21根体外预应力梁和3根体内无粘结预应力对比梁，利用提出的有限元模型对这些梁进行非线性全过程分析，详细研究了各种参数诸如非预应力筋配筋率、无粘结预应

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。