特征方向

The results show that with the sea level rise, amphidromic point in this sea area tends to move to the southeast, and then coastal tidal ranges change present consequently different features ,that is,at the left side and bayhead coast near the amphidromic point they change evidently, and little at the right side and bayhead coast far away from amphidromic point.

初步分 析研究表明：随着海平面上升，该海域 M2 分潮的无潮点有向东南方向偏移的趋势，受此影响，沿岸潮差呈现不同的变化特征，靠近无潮点的左侧及湾顶海岸变化明显，而阔别无潮点的右侧及湾顶海岸则变化不大。

The results show that with the sea level rise, amphidromic point in this sea area tends to move to the southeast, and then coastal tidal ranges change present consequently different features ,that is,at the left side and bayhead coast near the amphidromic point they change evidently, and little at the right side and bayhead coast far away from amphidromic point.

初步分 析研究表明：随着海平面上升，该海域 M2 分潮的无潮点有向东南方向偏移的趋势，受此影响，沿岸潮差呈现不同的变化特征，靠近无潮点的左侧及湾顶海岸变化明显，而远离无潮点的右侧及湾顶海岸则变化不大。

The features of two types 、two bilateralness and two department of modern teaching , have not only decided the big tendency of modern teaching method, but also decided the mold direction of sport teachers.

现代教学的双边性、双型性、及双部性特征决定了现代化教学方法的大趋势，也就决定了体育教师的塑造方向。

The features of two types 、two bilateralness and two department of modern teaching , have not only decided the big tendency of modern teaching method, but also decided the mold direction of sport teachers.

全部为DVD光盘，高清晰现代教学的双边性、双型性、及双部性特征决定了现代化教学方法的大趋势，也就决定了体育教师的塑造方向。

This paper analyses the occurrence characteristics and formation conditions for uranium deposits within calderas and brecciated complexes of some granites in China and foreign countries .

本文分析了国内外若干产于花岗岩中破火山口及角砾杂岩内的铀矿床产出特征及形成条件，提出今后应在花岗岩区叠加的火山活动中心，注意寻找角砾杂岩型的铀矿，并把它作为花岗岩中铀矿找矿的新方向予以积极探索。

Brushlet is a novel tool for image orientation analysis, whose energy feature is adopted in texture segmentation, image classification and denoising.

Brushlet是一种新的图像方向信息分析工具，其能量特征已被应用于纹理分割、分类以及去噪等领域。

Results: of 52 cases, a total of 33 intracranial aneurysms were detected by the application of volume viewer, which clearly displayed the body, neck and parent artery of intracranial aneurysms, and showed the aneurysms relation with peripheral vessels and cranioaural In 52cases, 8 can of cerebral vascular malformations showed the form, the size and the hemisphere of cacogenesis cerebral vessels, as well a the amount of feeding artery and draining vein.

结果：52例中，脑动脉瘤33例，16层CT容积成像清晰显示所有动脉瘤的形态、大小、生长方向、瘤颈特征及其与载瘤动脉的关系、瘤体与相邻血管和颅骨的三维结构关系，优于DSA脑血管畸形8例，16层CT容积成像并显示畸形血管团的形态、范围大小以及供血动脉、引流静脉的形态及数量。

This invention exposed the method of producing high performance cannular sapphire. It uses once-fashioning wetting EFG technology. It draws the cannular sapphire with required inner diameter and outer diameter and length from melt. Firstly, the size and specification of cannular sapphire need to be determined, then according to it to produce the matching cannular die. Then selecting sapphire particleboard from flame fusion method as raw material, and secelting the good seeding grew in (0001) direction by Czochralski method to grow cannular sapphire. The transverse temperature difference is within 2DEG C, the lognitudinal temperature grads within 10mm of die end face is 3-4DEG C, the growth speed is 30-40mm/h.

本发明公开了一种生长高性能管状蓝宝石的方法，采用一次成型的润湿导模法技术，直接从熔体中拉制所需内、外径尺寸和长度的管状蓝宝石，其特征是，首先确定管状蓝宝石的规格尺寸，根据上述规格尺寸制作相匹配的长管模具，然后，选用高纯度焰熔法蓝宝石碎料作为原料，选用提拉法生长的(0001)方向的优质籽晶，进行管状蓝宝石的生长，横向温差在2℃以内，纵向温度梯度在距模具端面10mm内为3-4℃，生长速率为30-40mm/h。

ABSTRACT Biometrics has the following properties: Universality, Uniqueness, Permanence and Collectability.

生物特征识别技术以其独有的与人不可分割的独特优势，使其成为身份认证的一个重要发展方向。

Nutrition solution culture, ICP-AES, the differential centrifugation technique and sequential chemical extraction method, suppression subtractive hybridization , RAPD were used in this thesis to study the mechanisms of copper tolerance and accumulation by Commelina communis grown in copper mine deposit which was reported to be a Cu hyperaccumulator, compared with C. communis grown in normal soil. Several aspects were examined, including: difference of copper tolerance and accumulation between C. communis grown in copper mine deposit and that grown in normal soil; difference of growth and nutrient accumunation between C. communis grown in copper mine deposit and that grown in normal soil under copper treatment; physiological differences between between C. communis grown in copper mine deposit and that grown in normal soil under copper treatment; subcellular distribution and chemical forms of Cu in C. communis; identification of cDNA fragments differentially expressed in C. communis grown in copper mine deposit; genetic diversity and copper tolerance of C. communis, tolerance mechanisms to copper in C. communis are discussed.

中文题名鸭跖草对铜的耐性机理和富集特征研究副题名外文题名 Mechanisms of Cu tolerance and accumulation by Commelina communis 论文作者廖斌导师蓝崇钰束文圣学科专业环境科学研究领域\研究方向学位级别博士学位授予单位中山大学学位授予日期2003 论文页码总数128页关键词重金属污染植物修复超富集植物土壤污染铜污染鸭跖草馆藏号BSLW /2003 /X53 /12 论文以本实验室报道的生长于矿山上的铜超富集植物鸭跖草和生长于正常土壤中的鸭跖草为试验材料，分别运用溶液培养法、ICP-AES元素测定技术、差速离心法和化学试剂逐步提取法、抑制消减杂交技术、RAPD技术研究了矿山和非矿山两种生境鸭跖草对铜的耐性和吸收积累的差异，两种生境鸭跖草在铜胁迫下养分吸收和积累的差异，两种生境鸭跖草在铜胁迫下生理反应的差异，以及铜在鸭跖草细胞内的分布及结合形态研究，矿山鸭跖草差异表达的cDNA克隆，铜对鸭跖草种群遗传分化的影响，从这几个方面探讨了矿山鸭跖草对铜的耐性机理。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。