以 h 开头的数学词汇 | 玄数

2012-10-07
half     一半
One of two equal parts into which sth is or can be divided.

handspan     一掌之宽
A unit of length based on the width of an expanded hand, usually taken as nine inches.
handspan

hectare (ha)     公顷
A unit of surface, or land, measure equal to 100 ares, or 10,000 square meters: equivalent to 2.471 acres.

heft     重量

  • US weight
  • To assess the weight of (something) by lifting.

height     高度

  • The distance between the lowest and highest points of a person standing upright.
  • The distance upward from a given level to a fixed point.

hemisphere     半球

  • One half of a sphere.
  • One half of the Earth, especially a half north or south of the equator or west or east of the prime meridian: Eastern Hemisphere, Western Hemisphere, Northern Hemisphere, Southern Hemisphere.

hendecagon     十一边形
A polygon with eleven sides and eleven angles.

heptagon     七边形
A polygon with seven sides and seven angles.

hexadecimal     十六进制
A number system having a base 16; the symbols for the numbers 0–9 are the same as those used in the decimal system, and the numbers 10–15 are usually represented by the letters A–F. The system is used as a convenient way of representing the internal binary code of a computer.

1201 = 4×162 + 11×161 + 160 —— 4B1

hexagon     六边形
A polygon with six sides and six angles.

hexahedron     六面体

highest common factor     最大公因数

Hindu-Arabic Number System     印度 – 阿拉伯数字系统

histogram     直方图

horizontal     水平的;水平线

hour     小时

hour hand     时针

hundredth     百分之一

hyperbola     双曲线
A conic section formed by a point that moves in a plane so that the difference in its distance from two fixed points in the plane remains constant.
| M1F1 | – | M1F2 |  =  | M2F1 | – | M2F2 |  =  | M3F1 | – | M3F2 | =  …… = Constant
hyperbola

 

hypotenuse     斜边,弦

hypothesis     假设