英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：

abacus    音标拼音: ['æbəkəs]
n. 算盘

算盘

abacus
n 1: a tablet placed horizontally on top of the capital of a
column as an aid in supporting the architrave
2: a calculator that performs arithmetic functions by manually
sliding counters on rods or in grooves

Abacus \Ab"a*cus\ ([a^]b"[.a]*k[u^]s), n.; E. pl. {Abacuses}; L.
pl. {Abaci} (-s[imac]). [L. abacus, abax, Gr. 'a`bax]
1. A table or tray strewn with sand, anciently used for
drawing, calculating, etc. [Obs.]
[1913 Webster]

2. A calculating table or frame; an instrument for performing
arithmetical calculations by balls sliding on wires, or
counters in grooves, the lowest line representing units,
the second line, tens, etc. It is still employed in China.
[1913 Webster]

3. (Arch.)
(a) The uppermost member or division of the capital of a
column, immediately under the architrave. See
{Column}.
(b) A tablet, panel, or compartment in ornamented or
mosaic work.
[1913 Webster]

4. A board, tray, or table, divided into perforated
compartments, for holding cups, bottles, or the like; a
kind of cupboard, buffet, or sideboard.
[1913 Webster]

{Abacus harmonicus} (Mus.), an ancient diagram showing the
structure and disposition of the keys of an instrument.
--Crabb.
[1913 Webster]

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Abacus - Wikipedia
    Abacus-based mental calculation (AMC), which was derived from the abacus, is the act of performing calculations, including addition, subtraction, multiplication, and division, in the mind by manipulating an imagined abacus
  • How to Use an Abacus (with Pictures) - wikiHow
    The abacus (the suanpan is the most useful variety) is a deceptively simple calculating tool still used all over the world It's a useful learning device for the visually impaired, as well as for anyone who wants to learn the roots of the modern calculator
  • Abacus - New World Encyclopedia
    An abacus (plurals abacuses or abaci), also called a counting frame, is a calculating tool for performing arithmetical processes, often constructed as a wooden frame with beads sliding on wires
  • Abacus | Definition, History, Origin, Facts | Britannica
    Abacus, calculating device, probably of Babylonian origin, that was long important in commerce It is the ancestor of the modern calculating machine and computer The abacus was in universal use in Europe in the Middle Ages, as well as in the Arab world and in Asia
  • The Abacus and the Numeral Frame - National Museum of American History
    The abacus is a computing device on which arithmetic calculations are performed by sliding counters (beads, pebbles, or flat discs) along rods, wires or lines The instrument may have originated in the Middle East before the time of Christ
  • ABACUS Definition Meaning - Merriam-Webster
    Probably of Babylonian origin, an abacus is a calculating instrument that uses beads that slide along a series of wires or rods set in a frame to represent the decimal places It is the ancestor of the modern digital calculator
  • Abacus - Math is Fun
    An abacus has beads that slide on rods It can be used to count, add, subtract, multiply and more Slide 3 beads UP on the right-most column 1 bead UP on the 2nd-from-right
  • Abacus Explained — Everything You Need To Know - History Tools
    The abacus is one of the oldest calculating devices, used by ancient civilizations globally This comprehensive guide will explain what an abacus is, how it works, its fascinating history, why it remains popular today, and how learning abacus calculation can improve your math skills!
  • Abacus - Math. net
    An abacus, also referred to as a counting frame, is a device used to perform calculations Abaci (or abacuses) can be used to teach arithmetic, perform practical calculations, and more





中文字典-英文字典  2005-2009