...离与物理距离的表格形式 6. 摘要 什么是遗传距离(genetic distance)? Genetic distance is the measure of the genetic divergence between species or populati***. This distance is measured using ancestral relati***hips and evolutionary patterns. The similarity between genes is importan...
...气压力描述了大气施加的压力,而大气压力是指由气压计测量的压力。 什么是大气压力(atmospheric pressure)? 在我们上方,大气中有大量空气。空气的重量不断地向下压着我们,给我们施加压力。大气施加的压力称为大气压力。测...
...should be noted that both these words refer to the same thing, that is the distance or measurement from side to side of something; the lesser of two or the least of three dimensi*** of a body. This can be more easily understood by looking at the diagram below. 如上图所示,宽度和宽度指...
...ce of attraction between two objects with masses and , separated by a distance can be given by, where is called the universal gravitational c***tant, with 6.67×10-11 m3 kg-1 s-2. (Note: gravitational mass can be further subdivided into active gravitational mass and passive gravitat...
... and C’ are also at the same stage of their up-down motion. The shortest distance between two adjacent points on a wave that are in the same phase is called a wavelength. A wavelength is often denoted by the greek letter lambda (). So for this diagram, the distances . This distance is marked o...
... oscillation are said to be in phase with each other. Wavelength is the distance between the two closest points that are in phase with each other along a wave. Thus, two adjacent peaks or two adjacent troughs on a wave are separated by a distance of one wavelength. Often, we use the Greek letter...
主差距离(main difference distance) vs. 取代(displacement) 距离和位移是用来描述两个给定点之间路径的两个术语。从另一个给定的点到一个给定的点可以走很多条路。在任何情况下,有一条路径是两个给定点之间的最短路径。距离和位...
...时差。 什么是纬度(a latitude)? Latitudes are the measurement of distance north or south of the Equator. These are imaginary circles parallel to the Equator. There are 180 such imaginary lines. We call them parallels. Each line measures one degree north or south of the Equator. Therefore, ...
...离、方向、大陆、海洋、国家等。 地球仪经常被误解为地图,地图根据比例尺以图解的方式表示地球表面或其一部分。本文节选向您展示了地图和地球仪之间的区别。 内容:地图(content: map) vs. 地球(globe) 对比图 定义 关键区...
纬度是地球上任何一点在赤道以北或以南测得的角距离,单位为度、分和秒。 赤道是一条绕地球运行的线,位于南北两极的中间,它的纬度为0°。值在赤道以北增加,被视为正值,而赤道以南的值则减少,有时被视为负值或...