尖锥

The experimental comparisons and researches to p-type silicon cone and wedge arrays coated by four kinds of metals with same structures are done, and show that the gold and aluminum will be hopeful cathode materials of field emission devices which operate at low vacuum and atmospheric pressure.

对结构相同的覆四种不同金属层（Au，Al，Ni，Cr）的p型硅尖锥和楔形体阵列进行了实验比较研究，表明金、铝可望成为低真空和大气压环境下工作的场发射器件的阴极材料。

"Belemnite:a cone-shaped, fossilized internal shell of any of an extinct genus of cephalopods related to the cuttlefish."

箭石：由灭绝的与乌贼有血亲关系的头足纲动物的内壳形成的尖锥状化石。

It is shown that the low potential barrier at the interface is the major cause of the enhancing effects instead of the negative surface electron affinity of the coating.

发明一项超薄类金刚石薄膜在硅微尖锥顶端的精确定位沉积技术，研制出带控制栅极类金刚石薄膜尖端阵列真空微电子源。

Firstly, stability of a hypersonic boundary layer on a blunt cone with small nose bluntness at zero angle of attack has been investigated and the transition location was predicted by the e-N method.

本文研究零攻角和小攻角、超音速和高超音速、尖锥和小钝头锥边界层的转捩预测问题。

Beneath the city's belly is an immense spire that ends in a bulbous unipod.

在城市下方是一个巨大的尖锥，顶端是一个球状的独脚架。

In order to understand the application of opposite vertical pyramidal tip s in single molecule damnification and measuring system,enhancement of opposite vertical pyramidal tip s was analyzed and computed.

为了探索对顶四面锥尖在分子损伤和检测中的应用，利用处理色散介质的时域有限差分法(FD2TD计算和分析了对顶四面锥尖之间的光增强，研究了不同锥体长度和激励光波长对光增强的影响。

These spines have been specifically evolved from the defensive urticating hairs of the slothien and adapted to a new purpose.

这些尖锥是由树獭兽的防御刺状毛发特别演化而来来适应新的目的。

It is also interesting that the number of coils would affect the silicon-tip structures.

有趣的是线圈的圈数能够影响矽尖锥的结构。

Coning and quartering method: put the sample onto the steel plate in the form of a cone; each scoop shall be inserted from the top of conical to make it spread along the top evenly, and pay attention not to misplace the center of cone; do it at least 3 times and mixed thoroughly; then flatten the top and use the cross plate from top to bottom to divide into 4 equal segments, randomly take out 2 oppositesegments and do it repeatedly for several times and finally divided into not less than the minimum retained quantity.

圆锥四分法：将样品置于已用样品刷好的钢板上，堆成圆锥形，每铲由圆锥顶尖落下，使其均匀地沿锥尖散落，注意勿使圆锥中心错位，如此反复至少移堆三次，使其充分混匀，然后将锥尖压平，用十字板自上插下，分成四等份，任取两个对角的等份，重复操作数次，缩分至不少于最少留样量。

It is possible that an implement best described as a sharp point set in a wooden handle, dated to c.

有关纹身的工具，描述得最好的是带有木柄的尖锥，时期为公元前3000年，由考古学家W.M.F。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。