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The methods of adaptive median filter, variance ratio of interclass and intraclass segmentation, and mathematical morphology were used to decrease the noise of original welded seam image, to extract welded seam region, and to carry on high frequency enhancement transformation for the interior of extracted welded seam with frequency range sharpening.

利用自适应中值滤波方法和类间、类内方差比分割法及数学形态学方法对原始焊缝图像进行降噪和提取焊缝区域，并对提取的焊缝内部进行频域锐化的高频加强变换。

Experiments were carried out with four familiar cultivating modes of tea gardens which were simple tea garden,greenhouse tea garden,Pine-tea intercrop tea garden and trees surrounding tea garden,to determine the ecological environment factors of tea gardens(including microclimatic factors and soil factors) and tea biochemical indicatorsincluding amino acid,caffeine,tea polyphenol,P.

对陕南茶区的纯茶园、塑料大棚茶园、松茶间作茶园及林篱茶园4种常见栽培模式的茶园生态环境(包括小气候因子、土壤因子)和茶叶中各项生化指标(包括氨基酸、咖啡碱、茶多酚、酚氨比、茶水浸出物)进行了测定。

Calculating the pavement fragment adoptioning contradicting -cleft -glue and glass fiber grille ,deal with the existing crevasse, at kaminaka surface layer install rubber asphalt water proof adhesive layer , at the same time guarding against water coming into nakashita surface layer、enhanced interlamination bonding ...

论文进行橡胶沥青混合料的主要试验内容有：1、根据京秦高速公路管理处提供的石料进行目标配比设计；2、进行混合料马歇尔击实及相关性能试验确定最佳油石比。3、根据冷料配比进行热料仓筛分，确定热料仓配比；4、根据热料仓配比进行马歇尔击实试验。4、进行混合料的路用性能试验，分析橡胶粉的掺入对沥青的高低温性能、弹性性能、抗老化性能的改善情况，分析橡胶粉的掺量、目数、胶源、加工工艺和基质沥青对橡胶沥青性能改善的影响程度。

This dissertation has studied various architectures of Sigma-Delta modulator systematically. According to power dissipation, stability and circuit implementation, a 2-2 cascade architecture is introduced. Oversampling ratio is 32. The attenuation factors of each integrator and interstage coefficients are obtained from behavioral simulation.

本论文系统地研究了∑A调制器的各种体系结构，根据功耗、稳定性以及电路实现等方面综合考虑，∑A调制器采用级联2—2结构，过采样比为32，并通过行为级仿真确定了积分器的增益衰减因子及级间耦合系数。

We thoroughly discuss the physical meaning, the relationship between AVO attributes, background trends, characters of AVO cross-plotting and the implications in parameters inversion for the new formula represented by Lame contrast and shear modulus, and present an elastic parameter AVO analysis method.

因此，利用这两个参量的AVO背景趋势及交会图特征不仅可以提取纵、横波速比和泊松比，而且还可以放大弱AVO异常。

Wind filler is made from silencing material with noise 5 db lower than national industrial standard, whilst suction wind strength 120-150 Pa higher than national industrial standard and up to 350 Pa, leaving strong suction and desirable ironing effect and resolving insufficient suction of old ironing table.

吸风压强比国家行业标准高120-150Pa，最高达350Pa。使吸风强劲，使熨烫效果更好。解决过去老式烫台吸风不足的弊病。风门全程采用机械模具冲制，使风门光洁顺畅及密封性好。

The isobar distribution along the sidewall was plotted,and the characteristics of pressure distribution and its evolvement pattern were studied in detail.

针对突扩突跌体型泄水建筑物侧墙上呈现出的复杂水力特性，通过大比尺模型试验，测量了突扩突跌体型侧墙上的平面压力分布，绘制了侧墙等压线分布图，并对其分布特征及演变规律进行研究。

Objective To determine the ED50 and ED95 of intrathecal isobaric bupivacaine for cesarean delivery.

目的测定等比重布比卡因用于剖宫产术蛛网膜下腔阻滞麻醉的ED50及ED95。

Compared to cross-sectional imaging, it has a lot of advantages, such as the rate of obtaining projections, X-ray utilization ratio and the isotropy of the spatial resolution and density resolution in 3D object.

它在获取投影数据的速度、X射线的利用率及重建出的三维物体的空间和密度分辨率各向同性等方面，比断层成象有着极大的优越性。

Jack pine had higher rate of gas exchange and water use efficiency than black spruce when seedlings were well watered.

解除干旱胁迫后，黑云杉的气孔敏感性、光合能力及水分利用效率的恢复都要比北美短叶松更快。轻度的干旱胁迫锻炼可以帮助北美短叶松在更严重的干旱胁迫下保持固有而强劲的耐旱能力。

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。