空气柱

The narrow column of air which rests upon our shoulders weighs almost 2,000 pounds.

我们的双肩上所承受的细长的空气柱的重要几乎有2000英磅重。

A more or less vertical column of air whirling around itself as it moves over the surface of the Earth.

风暴在地表上移动时或多或少形成的一个旋转垂直的空气柱。

A tornado or lesser whirlwind occurring over water and resulting in a funnel-shaped whirling column of air and spray.

水上生成的飓风或稍弱之旋风，形成漏斗状旋转的空气柱和水柱

Device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone .

黄铜的管乐器中改变空气柱的长度来变化音调的装置。

The law that the blasting effect varies with the length of bottom air column is analysed.

结果表明，底部空气柱长度与装药深度之比为0.4～0.8时，爆破效果最佳，爆破体积比传统的装药结构增大45％～55％，显著提高了炸药能量有效利用率。

The blasting effect of bottom air column charge is studied through a series of crater tests on cement mortar models.

本文通过水泥砂浆模型上的一系列爆破漏斗试验，研究底部空气柱装药的爆破效果，分析了底部空气柱长度变化对爆破作用的影响规律。

For example, if an open test tube with some water in the bottom is placed in a room in which the air is relatively dry, water vapor will diffuse out through the column of air in the test tube.

例如，当一支底部有水的开口试管被放置在一间空气相对干燥的房间里，水蒸气就会通过试管中的空气柱散布出来。

Although there is 34,500 tons of gaseous nitrogen in the air column above each acre of the earth's surface, this cannot be used by plants until it has been fixed by nitrogen-fixing bacteria and algae.

虽然在地球表面每英亩空气柱中有34，500吨气态氮，但是如果这些气态氮不被固氮菌和藻类固定，是不能被植物利用的。

The numerical methods were adhibited that initialize boundary conditions need not enact the diffluence ratio, also not enact the air columniation. Results of simulation display the form of the air columniation, circle flow of liquid.

采用了初始边界条件不需给分流比、也不需设定空气柱的数值方法，模拟结果显示了空气柱的形成、流体的旋流流动。

The relations between quality factor and the periods of air holes around the defect and the thickness of slab are demonstrated.Then, the positions and shapes of nearest holes are adjusted to excite more defect modes, and the relation between defect modes and modified cavity in defect region are discussed. Moreover, the mechanism of light confinement in vertical and plane direction is discussed, and how they effect the quality factor can be induced.

先探讨结构周期数和厚度对品质因子的影响，接著修正缺陷空腔附近空气柱大小和位置，分析其与激发模态的关系，及相应品质因子的大小，此外分别讨论垂直方向和平面方向的光局限机制与影响品质因子的程度。

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。