有奖纠错
| 划词
像科学家一样思考(视频版)

In the 17th, 18th, and 19th centuries, many mechanical calculators were developed, though with little success until the arrival of the arithmometer, a portable and reliable mechanical device that could add, subtract, multiply, and divide numbers.

在17、18和19世纪,开发机械计器,但在则计器到来之前几乎都没有则计器是一种便携式且可靠的机械装置,可以对数字进行加、减、乘和除。

评价该例句:好评差评指正

用户正在搜索


galactoncus, galactopathy, galactopermease, galactophagous, galactophlysis, galactophore, galactophoritis, galactophorous, galactophorus, galactophyga,

相似单词


3G, 401(K), a,
  • 微信二维码

    关注我们的微信

  • 手机客户端二维码

    下载手机客户端

赞助商链接