Water not easy to vaporize under the slab, and will continue to basification function with cement, cause the erode and curve even break

水份在板材下面難以蒸發(fā)，繼續(xù)與水泥發(fā)生堿化作用95视频手机在线观看，導(dǎo)致板材受侵蝕以致翹角甚至爆裂欧美人与动牲交XXⅩBBB。

Water not easy to vaporize under the granite slabs ,and will continue to basification function with cement, cause theerode and curve even break

水份在板材下面難以蒸發(fā)，繼續(xù)與水泥發(fā)生堿化作用又硬又粗又黄的视频，導(dǎo)致板材受侵蝕以致翹角甚至爆裂。

Water not easy to vaporize under the granite slabs , and will continue to basification function with cement, cause the erode and curve even break

水份在板材下面難以蒸發(fā)精品一区在线播放，繼續(xù)與水泥發(fā)生堿化作用中国老女人老妇女刺激视频，導(dǎo)致板材受侵蝕以致翹角甚至爆裂。

Objective To evaluate the operation effect of thoracolumbar burst fracture and the curing effect of GSS posterior lumbar interbody system in it.

目的 探討胸腰椎爆裂骨折合并脊髓損傷的手術(shù)治療效果及GSS型椎弓根內(nèi)固定系在胸腰椎爆裂骨折中的作用性感带AV电影在线免费观看。

The superposition between fracturing and explosive spalling plays a key role in the multi-layer damages of the lining concrete.

裂隙的擴(kuò)展和爆裂作用的疊加是襯砌混凝土發(fā)生多層剝落的重要原因久久久二级黄色片。

Through simulation of the real process of thomcolumbar burst fracture and use of modem dynamics techniques, the present study was (1) to investigate the kinetic relationship between structural damage and impact energy absorption and dynamics mechanism of thoracolumbar burst fracture by quantitative analysis of various injured segments;(2) to explore the instability mechanism of L1 vertebral burst fracture and its injury threshold by three-dimensional analysis of the injured segment with stereophotogrammetry in combination of transient physical parameters, anatomy and image;(3) to explore the corresponding relationships between impact energy, geometry parameters and biomechanics by geometry and biomechanical analysis of thoracolumbar burst fracture, which may provide an objective standard for evaluation of spinal injury severity and experimental evidence for adoption of biomechanical treatment in clinic;(4) to evaluate the fixation effect of different instruments and the effect of intervertebral bone graft on segment fixation by analysis of the threedimensional stability of different internal fixation instruments and their decompression of the spinal canal, which may provide experimental evidence for therapeutical selection for thoracolumbar burst fracture in future; and finally to investigate the effect of various instrument fixation on dynamical characteristics by comparison and quantitative analysis of frequency and amplitude responses, which may provide certain theories and experimental evidence for application of vibration test to judge the stability of the spine.

本研究從胸腰段脊柱爆裂骨折發(fā)生的實際過程出發(fā)欧美性交A级性爱免费黄片，以現(xiàn)代動力學(xué)檢測及計算機(jī)多通道高性能數(shù)據(jù)采集分析系統(tǒng)等高新技術(shù)為基礎(chǔ)，實時量化分析損傷節(jié)段的工程參數(shù)四虎国产精品久久久久久网址，揭示了結(jié)構(gòu)破壞與能量吸收的變化規(guī)律免费精品自在拍精选在线观看AV，探討了胸腰段脊柱爆裂骨折的瞬態(tài)損傷機(jī)制；利用三維立體攝像技術(shù)玖玖爱在线视频播放，對不同損傷程度的節(jié)段進(jìn)行三維運(yùn)動分析精品人妻福利资源在线看，結(jié)合瞬態(tài)物理參數(shù)、影像學(xué)和病理解剖日韩.中亚.欧美，明確了〓椎體爆裂骨折的失穩(wěn)機(jī)制及損傷閾值免费国产福利小视频在线；通過對胸腰椎爆裂骨折的幾何學(xué)變化及生物力學(xué)分析，明確了撞擊能量與幾何參數(shù)美女被操网站在线播放、幾何參數(shù)與生物力學(xué)的相應(yīng)關(guān)系亚洲精品福利在线，為評判脊柱損傷程度提供了客觀標(biāo)準(zhǔn)，為治療中采取適宜的生物力學(xué)方法提供了實驗依據(jù)色人人国产；通過對比分析不同內(nèi)固定器械的三維穩(wěn)定性和對椎管的減壓作用另类在线精品视频，評價不同器械的復(fù)位固定作用，同時比較椎體間植骨對節(jié)段固定作用的影響丝袜黄色录像，為今后臨床胸腰段脊柱爆裂骨折的治療選擇提供依據(jù)在线看羞羞漫画；利用振動測試與分析技術(shù)，比較及量化分析了不同致傷狀況的頻幅響應(yīng)特征自拍偷拍12，比較分析了各種器械固定對動力學(xué)特性的影響欧美极品一区，為今后臨床建立基于振動測試與分析技術(shù)判斷脊柱穩(wěn)定性的診斷方法，提供了一定的理論和實驗依據(jù)4438黄色网。