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slide rule 計算尺。

slide trombone

The development of mechanized mathematics goes through tortuous way in the western countries , written calculation is the most compute means . the mechanized degree of writing calculation is lower , and not meet the actual demands . other means , example : table calculation , slide rule , graphic solution , are invented to make up the defect of writing calculation 由于西方比較崇尚公理化數學,不易想到要從筆算在機械化方面存在的缺陷上尋求改進方向,以選擇和設計算具算法;而是另外尋找別的計算方式、工具,如表算、計算尺和諾模圖等來解決應用計算問題,走了彎路。

This paper , from three aspects of analogue test , theoretic analysis and examples comparison , analyzed the superimposition mechanism and mutual interference mechanism of two mining activities in the slop rock mass under the influences of simultaneous open - pit and underground mining , thus systematically summing up the sliding rule of slope rock mass and the characteristic of movement status in different areas 本文從模擬試驗、理論分析和實例對比三個方面,分析在地下與露天同期開采影響下,兩種采動影響在邊坡巖體內的相互疊加機制和相互擾動機理,從而系統地歸納出邊坡巖體的滑移規律和不同區域的移動性態特征。

A pianist might play most of the ivories on the keyboard , but rarely did any engineer use all the scales on his ( almost never her ) slide rule 鋼琴家或許會彈到鍵盤上大部份琴鍵,但工程師則極少完全用到計算尺上的全部刻度。

He enjoyed measuring , sawing , building , explaining the operation of the slide rule to us , working out fraction problems 他喜歡測量、切割、建造、給我們講解計算尺的操作、計算分數問題。

1660 william oughtred , english mathematician who invented the slide rule in 1622 , died at albury in surrey 1622年發明計算尺的英國數學家威廉?奧特雷德在薩里郡奧爾伯里逝世。

Before the 1970s the slide rule , or slipstick , was as common as the typewriter or the mimeograph machine 1970年代之前,計算尺跟打字機和油印機一樣,隨處可見。

Inscribed with a dozen or more function scales , the slide rule symbolized the mysteries of arcane science 計算尺上刻著十幾種函數刻度,宛如科學奧秘的化身。

Azimuth ustment slide rule 方位角修正計算尺

In offices there are slide rules for multiplication and division, and desk machines which can add, subtract, multiply and divide . 在辦公室里有能做乘法除法的計算尺,以及能加減乘除的臺式計算機。

One handy example is the replacement of the slide rule by the pocket calculator . 一個簡便的事例是用袖珍計算器代替計算尺。