截面积

Trihedral corner reflectors ; shooting and bouncing ray ; radar cross section

三面角反射器；射线跟踪法；雷达散射截面积

The unoperated sides of the treated animals also served as controls. Six normal rats were treated as normal control group. Three different siRNA plasmid solution containing RC2-Ⅰ, MAFbx-Ⅱ, CON (50μl , 0.8μg/μl)was injected and transfected by electroporation as methods mentioned above, respectively. The changes of RC2 and MAFbx mRNA levels and RC2 protein levels after 3 days were determined by real-time quantitative PCR and Western blot, respectively. On postoperative 2, 3 and 4 weeks, the rate of wet muscle weight preservation, mean diameter of muscle fiber and mean cross-section area of muscle fiber and muscle protein content were checked and then compared between group CON and group RC2 or group MAFbx, respectively. The differences between groups were analyzed by one-way ANOVA. Ultrastructural changes of muscle fiber were observed at 2, 3, 4 weeks postoperation.Results GFP plasmid was efficiently deliverd into muscle by electroporation and robust GFP expression in muscle could be observed more than three weeks. Histology shows that injected plasmid DNA diffuses extensively in muscle tissue.

1、健康雌性SD大鼠18只，随机分为电穿孔组和非电穿孔组，每组9只，制作右下肢趾长伸肌失神经支配模型；EP组为将质粒pEGFP-N1溶液50μl(0.8μg／μl)注射入右趾长伸肌后，立即于两侧腱腹交接处给予电穿孔，电穿孔参数为：电场强度为200V／Cm，脉冲100μs，频率1Hz，施加10次脉冲；NEP组仅质粒pEGFP-N1溶液注射；转染后1、2、3周，荧光显微镜下观察趾长伸肌中GFP的表达情况，转染后1周行Western印迹检测趾长伸肌中GFP蛋白的表达情况，检测和优化体内转染效率。2、健康雌性SD大鼠78只，随机分为失神经对照组、RC2基因治疗组(RC2组)，MAFbx基因治疗组，每组24只，制作右下肢趾长伸肌失神经支配模型，余6只为正常组；分别将含CON、RC2、MAFbx基因的siRNA重组质粒注射入趾长伸肌，之后给予电穿孔，方法同上；治疗后3天实时定量PCR和Western印迹检测各组中RC2或MAFbx基因的mRNA和蛋白的表达变化，治疗后2、3、4周检测各组肌湿重维持率、肌细胞直径和肌细胞截面积，肌细胞超微结构变化以及肌纤维中蛋白含量变化。

MAIN OUTCOME MEASURES: Cross-sectional areas of the third vertebra of all rats by two methods.

主要观察指标：两种方法所测得的大鼠L3椎体横截面积。

METHODS: The shape of the human ankle plantar flexor muscle was estimated in vivo by CT, and the cross-sectional area of the muscle and the circumference of the lower leg could be calculated by Xiphoid CT software.

采用螺旋CT对受试对象双侧小腿进行不间断连续扫描，影像分析采用Xiphoid CT专用图像分析软件，由CT图像计算得出小腿围、踝关节跖屈肌横截面积，根据体视学原理采用数值积分法计算跖屈肌群体积。

Wall area in RHRSP basial arteries had been increased since the fourth week post-operation and FN expression increased at the eighth week.

易卒中型肾血管性高血压大鼠基底动脉横截面积第4周和第8周时（15 867.4±1 316.9μm^2和 22556.5±6485.6μm^2）均高于对照组(13598.9±1090.8μm^2)，纤维连接素蛋白表达量第8周时(166.2±5.1)增加。

To observe and measure the distance and angulation of some muscles such as flexor carpi ulnaris,extensor carpi ulnaris , flexor carpi radialis,extensor carpi radialis longus,extensor carpi radialis brevis, brachioradialis,etc,we achieved the moment of force and loaded them in the model .

测量8具新鲜成人尸体的前臂主要肌肉和韧带横截面积，分别取其平均值，通过横截面积的肌力计算法，求得肌力和韧带力。主要肌肉为肱桡肌、桡侧腕长伸肌、桡侧腕短伸肌、尺侧腕伸肌、尺侧腕屈肌、桡侧腕屈肌等。测量的主要韧带为腕掌侧韧带、腕背侧韧带等。测量主要肌肉和韧带与坐标轴的夹角，求得分力值，然后直接或根据力矩等价原则间接地将肌力加载于模型体表各节点。

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。

Domelike decompression can increase APDC, IFD, ELD and CSAC significantly, especially for CSAC, which is an effective way for lumbar stenosis.

弯顶形椎管扩大成形术可明显扩大腰椎管的矢径、上关节突内缘间距、椎板间距和椎管截面积，尤其是椎管截面积扩大更为明显，是一种治疗腰椎管狭窄症有效的方法。

The invention belongs to the fluid measuring technical field and relates to an oil, gas and water three-phase oil well continuous gauging device, which comprises a high-efficient gas-liquid separator; the high-efficient gas-liquid separator is connected with an oil, gas and water three-phase inflowing port; a gas phase outlet of the oil, gas and water three-phase inflowing port is connected with a gas phase measuring pipeline; a gas path temperature sensor, a gas path pressure sensor and a gas path endocone flowmeter with high-frequency differential pressure transmitter are arranged on the gas phase measuring pipeline; a liquid phase outlet of the high-efficient gas-liquid separator is connected with a liquid phase measuring pipeline; a liquid path Coriolis mass flowmeter and a liquid path endocone flowmeter are arranged on the liquid phase measuring pipeline; and the cross section of the pipeline for mounting the liquid path Coriolis mass flowmeter is more than the cross section of the pipeline for mounting the liquid path endocone flowmeter.

本发明属于流体测量技术领域，涉及一种油、气、水三相油井连续计量装置，包括高效气液分离器，高效气液分离器与油、气、水三相流入口相连，其气相出口与气相测量管路相连，在气相测量管路上装有气路温度传感器、气路压力传感器、带有高频差压变送器的气路内锥流量计；高效气液分离器的液相出口与液相测量管路相连，在液相测量管路上装有液路科氏质量流量计和液路内锥流量计，安装液路科氏质量流量计的管路的截面积大于安装液路内锥流量计的管路的截面积。

At 14 days after sciatic nerve torsion injury, all rats were anaesthetized again and the distal section of sciatic nerve was obtained and cut into slices, meanwhile the cross sectional area, the density and size frequency distribution of medullated fibers, as well as the number of medullated fibers in each nerve were determined.

坐骨神经捻挫损伤后14 d，全部动物再次麻醉，取捻挫部位远端坐骨神经制备切片，测量并计算神经横截面积，有髓纤维密度和有髓纤维大小频率分布和每根神经的有髓纤维数目。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。