小于正常

A posteroanterior cephalogram was taken for every subject at the same time each year, lasting for 6 years. Computer aided cephalometrics was carried out. Results: 1. In adolescents with normal occlusion, the total variation range of the upper and middle face symmetry in transverse and vertical d...

结果表明：正常人上、中面部骨骼存在对称性的正常变异，其范围在 1 3— 1 8岁保持稳定，水平向小于 8%，垂直向不超过 9mm；在其相对于颅底的位置关系及其骨骼各对应部位之间，有较好对称性；面部骨骼的生长发育具有潜在的优势特点。

Results The patients with cardiac amyloidosis had characteristics of large atriums and hypertrophic ventricular walls in echocardiography. And they also had low limb lead voltage in ECG. The ratio of (SV5+RV1) and left ventricle crossing area of all patients were obviously lower than 1.5. Biopsy behaved staining of congo red. And most patients had renal, dermatic and gastrointestinal involvements.

结果 心脏超声心动图表现为患者左、右心房增大，心室肥厚，心腔正常；心电图表现为肢体导联低电压，心电图电压(SV5+RV1)与左心室横截面积CSA比值均明显小于1.5；心外活检表现为刚果红染色阳性，且大部分患者合并肾脏、皮肤及消化系统损害。

At the BCL of 500ms, 1000ms and 2000ms,the VWtimes increased markedly with the BCL prolonging, and the degree of increasing was even obviously when heart rate was slow (BCL=2000ms or 1000ms). The enlargement of VWs was a most important reason to increase the incidence of ventricular arrhythmias; 2）At the BCL of 500ms, 1000ms or 2000ms,the VWtimes of the premature stimulates S2 was at endomembrane were wider than at the outermembrane. We supposed that premature stimulates come from endomembrane was easier inducing VF compared with outermembrane;3The VWtime of unidirectional block was wider than reentry's, we can see that reporlarization dispersion changed dynamicly. 4The QRS polar of the premature stimulates was opposite the primary beats ,which suggesting that excitation of inducing premature beats was coming from epicardial. That is to say electrotonic potential take part in the creation of reentry;5With the ratio of the Tp-e/QT increasing the occurrence of VF was upgrading. So the ratio was an effective method to estimate the event of SCD.6 The VWtimes of S3 were broaden than S2's. But we can not study penetratingly, which is the contents of our future studies.

在BCL为500ms、 1000ms和2000ms刺激条件下，随着刺激周长的增加单向传导阻滞时间易损窗呈增大趋势；并且在心率较慢时(BCL为2000ms和1000ms)增大最明显，是LQTS患者室性心律失常发生率增加的原因之一；2）在BCL为500ms、 1000ms和2000ms刺激条件下，S2位于内膜侧时时间易损窗大于在外膜侧时的，推测来自于内膜侧的期前刺激易于诱发室性心律失常；3）折返激动时间易损窗小于在单向传导阻滞时间易损窗，折返易发生于S2刚进入单向传导阻滞区间时，这说明复极梯度的不均一是动态变化的；4心电图上倒置QRS波与正常S1刺激所引起QRS波极性相反，提示不同位置S2刺激引发的室性早搏的兴奋均来自于外膜侧，说明了电紧张电位扩布参与了折返的产生；5）Tp－e/QT可以反应跨膜复极离散度，随着Tp－e/QT比值的增加PVT的发生增多，其可以用来预测室性心律失常的发生。6）随着期前刺激数目的增加时间易损窗增大。

OR＞1 indicates dangerous factor, OR＜1 protective factor, and OR=1 no significance. The results showed that if triglyceride and very low density lipoprotein cholesterol increased an average level of normal respectively, and there would be OR of TG 2.43 (P＜0.05) and OR of VLDL-C 6.09 (P＜0.05), the high levels of TG and VLDL-C were the factors of lithogenesis. High density lipoprotein cholesterols (HDL1-C, HDL2-C, HDL3-C), with OR less than one, were the factors of protecting against the formation of gallstone.

结果：甘油三酯和极低密度脂蛋白胆固醇每增加一个正常均值水平，OR值分别是2.43(P＜0.05)和6.09(P＜0.05)，是重要的致石因素指标；高密度脂蛋白胆固醇(HDL1-C、HDL2-C、HDL3-C)，OR值均低于1，是重要的防石因素指标；低密度脂蛋白胆固醇和总胆固醇的OR值均小于1，本研究结果提示其可能是一种代谢状态而非保护因素。

The results indicate that:① Soot records is one of direct and effective means;② Overdriven detonation appears only once and several blasts appear in DDT (Deflagration to detonation transition);③ The dimension of acetylene is less than that of hydrogen under the same initial condition.

试验结果表明：①烟迹法是研究DDT更为直接和有效的手段之一；②在本试验条件下，观察到DDT过程中过爆只会出现一次，但从过爆衰减至正常C-J爆震波的过程中存在多次多点爆炸的迹象；③初始条件相同的情况下，乙炔的胞格尺寸小于氢气的胞格尺寸。

Methods: 41 cases of parotid benign tumors (diameter .2cm) were treated by partial parotidectomy with conservation of master duct, and ectomy field was extended 5~10mm from the borderline of tumor.

对41例诊断为腮腺浅叶良性肿瘤，且肿瘤直径小于2.0cm的病例，作保留腮腺导管的腮腺部分切除术，于肿瘤外5~10mm处切除肿瘤与周边正常腺体组织。

Results Fracture of 7 cases had been synosteosis completely, the situation and line of force of 3 cases is satisfying, mobile of knee and ankle is normal without the malformation of contraction; 4 cases of fracture had the slight foreopistho angulus malformation with the contraction of 2 cm.

结果7例骨折均达到完全骨性愈合，其中3例对位对线良好，膝踝关节活动正常，患肢无短缩；4例骨折端有轻度前后成角，患肢有短缩但均小于2 cm。

Results Fracture of 7 cases had been synosteosis completely, the situation and line of force of 3 cases is satisfying, mobile of knee and ankle is normal without the malformation of contraction; 4 cases of fracture had the slight fore opistho angulus malformation with the contraction of 2 cm.

结果7例骨折均达到完全骨性愈合，其中3例对位对线良好，膝踝关节活动正常，患肢无短缩；4例骨折端有轻度前后成角，患肢有短缩但均小于2 cm。

The reseating pressure must not be less than the pressure in a normally charged cylinder at 130°F.

重新关闭时的压力不能小于130°F时钢瓶内的正常压力。

The reseating pressure must not be less thanthe pressure in a normally charged cylinder at 130°F.

重新关闭时的压力不能小于130°F时钢瓶内的正常压力。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。