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拔出力
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     In the control group,the maximal antibending force and pullout strength were (80±7)N,(185±23)N,(262±10)N.
     对照组侧向、垂直向及螺钉拔出力分别为(80±7)N,(185±23)N,(262±10)N。
短句来源
     Results In the trial group,the maximal antibending force and pullout strength were (103±11)N,(275±33) N,(351±14)N.
     结果:实验组侧向、垂直向最大载荷及固位钉拔出力分别为(103±11)N、(275±33)N、(351±14)N。
短句来源
     Pull out strength of pedicle screw fixation in PMMA control group was(839.7 ±181.1)N ,while those following PMMA restoration and PMMA augmentation were (1846.2 ± 342.1)N and (1946.9 ±359.4)N respectively.
     PMMA对照组拔出力为(839.7±181.1)N,修复组为(1846.2±342.1)N,强化组为(1946.9±359.4)N。
短句来源
     For PMMA group,the binding strength and pull out force were (288.5±2.3) N and (753.0±26.1) N respectively,but they fell to (228.0±9.2) N and (603.0±14.1) N respectively at week 16,indicating that strength of PMMA was high initially,but decreased gradually with time.
     PMMA组与骨界面结合力1周达到(288.5±2.3)N,螺钉拔出力高达(753.0±26.1)N,16周时界面结合力降为(228.0±9.2)N,拔出力则降为(603.0±14.1)N,表明PMMA初始强度高,随时间推移逐渐下降。
短句来源
     Results The pull out strength of pediclescrew fixation in CPC control group was (826.8 ± 171.0)N; whereas those following CPC restoration and CPC augmentation were(1430.3± 278.4)N and (1452.7 ± 288.3)N respectively.
     〖结果〗CPC对照组拔出力为(826.8±171.0)N,修复组为(1430.3±278.4)N,强化组为(1452.7±288.3)N;
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  相似匹配句对
     Research on pull-out strength of metallic cancellous screws
     金属松质骨螺钉出力的研究
短句来源
     Pullout test was performed 24 hours after the fixation,and maximum axial pullout strength was measured.
     24 h后行轴向出力测试。
短句来源
     A New Method of Determining the Firm Power
     确定保证出力的新方法
短句来源
     Construction Technology of Pile Pulling
     桩施工工艺
短句来源
     STUDY ON DEEP DISTILLATION OF RESIDUES
     渣油的深研究
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  pullout strengths
This study compared pullout strengths of the T-fix device versus horizontal suture toward improving T-fix biomechanical properties.
      
Brown et 14 reported no difference in the pullout strengths between oneand two-incision femoral constructs.
      
Suture pullout strengths also were assessed in the uterosacral ligament.
      
Testing is required to analyze which design offers higher pullout strengths.
      
That provides a potential explanation for the observed lower pullout strengths in the sacral region, based on histologic composition of the ligament.
      
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  withdrawal force
The analysis of the withdrawal force curve of the wetting curve using 63Sn-37Pb and 96.5Sn-3.5Ag eutectic solders
      
To analyze the withdrawal force curve in the wetting balance curve, wetting balance tests using the 63Sn-37Pb and 96.5Sn-3.6Ag eutectic solders were conducted by varying the immersion speed, sample perimeter, and solder temperature.
      
The mechanism of the withdrawal force curve was reviewed and a new method for calculating the surface tension of solders using the withdrawal force curve was introduced.
      
The results showed that the maximum point of the withdrawal force curve is generated when the sliding solder meets the bottom corners of a sample and the contact angle is reduced to zero.
      
The maximum withdrawal force subtracted by end force can be expressed using force balance equation as F=pγ.
      
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In this paper, the post-cracking efficiency factors for the fibres of the random short fibres reinforced concrete under direct tension are discussed. On the assumption that the pull-out forces on the fibres with the same embedded length in the matrix are the same, regardless of the orientation of the reinforcement, and according to the statistical rule the authors obtain that the postcracking strengthening efficincy of the fibre due to its orientation is cos θ. Then by means of the probability theory the rational...

In this paper, the post-cracking efficiency factors for the fibres of the random short fibres reinforced concrete under direct tension are discussed. On the assumption that the pull-out forces on the fibres with the same embedded length in the matrix are the same, regardless of the orientation of the reinforcement, and according to the statistical rule the authors obtain that the postcracking strengthening efficincy of the fibre due to its orientation is cos θ. Then by means of the probability theory the rational orientation efficincy factor C_θ for the random shor fibres may be derived. From the assumption described above the following conclusion may be drawn that the fibres with the different orientation will possess the same critical length. Then the probability theory may be also used in making out the post-cracking length efficiency factor C_l for the fibres. Furthermore, this paper suggests interracial bond factor C_b and explains its physical meaning. Finally, the authors propose the formulas for calculating the post-cracking fibre efficiency factor C_f=C_θC_bC_l, for estimating the critical volume of fibres U_f(crit)=σ_(mu)/(C_(∫σfu-η_θ∈_(mu))E_f+η_θσ_(mu) and for predicting the ultimate direct tensile strength or the post-cracking tensile stress of the composite σ_(cu)=C_(fσfu)V_f The predicted values are well agreed with the experimental results.

本文对乱向短纤维增强混凝土在直接拉力作用下裂后的纤维有效系数,进行了探讨。根据埋深长度相同的纤维具有相等拔出力而与纤维取向无关的假设,并按照统计规则,作者得到纤维由于取向不同而引起的裂后增强效率为cosθ。然后应用概率理论求出合理的乱向短纤维方向有效系数C_0。根据上述假设,可以得出取向不同的纤维将具有相同的临界长度的结论。这样,也就可应用概率理论、推导纤维长度有效系数C_l。本文还提出了界面粘结系数C_b并说明了它的物理意义。最后,作者提出了下列分式:计算裂后纤维有效系数C_f的为 C_f=C_θC_bC_l;纤维临界体积率V_f(crit)的为 V_(f(crit))=(σ_(mu))/C_(fσfu)-_(η0∈_(mu)E_f+ηθσ_(mu);复合材料的极限直接抗拉强度或裂后抗拉应力为σ_(cu)=C_(fσfu)V_f。实验值与估计值颇相一致。

This paper presents the results of investigation by using the drilled hole and pull-out test method for the determination of the strength of in-situ concrete. Statistical analysis of the test data shows that there is a good correlation between the pull-out force and the corresponding compressive strength of concrete. This method has accurate advantage over the rebound method and ultrasonic-rebound combined method.

本文对后装拔出法检测混凝土强度的影响因素进行了试验研究。试验数据的统计分析表明,拔出力和混凝土抗压强度之问有很好的相关性,其检测精度高于回弹法和超声回弹综合法。

Abstract

根据对40具国人下胸椎及腰椎椎弓根形态的测量结果,作者对DICK器械进行了改良设计,在保留原有器械纵向承开功能的基础上,通过增加的悬吊钩固定复位螺钉,并以此为支点行牵拉复位,同时增大了复位螺纹进入椎体部分的螺纹直径,以提高螺钉的抗拔出力。临床应用20例重度腰椎滑脱患者,术前平均滑脱率48.3%(32.6%~62.5%)。经过一次手术者8例,三次手术者1例。术后椎体平均复位率80.8%(60~100%)。配合腰背支具可早期下床活动,无并发症发生

 
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